NEET Test Series from KOTA - 10 Papers In MS WORD
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Motion in One Dimensions
141224
The displacement of a particle moving with uniform acceleration in time \(t\) is given by \(s=\) \(30 t+5 t^{2}\), its initial velocity is
1 \(35 \mathrm{~ms}^{-1}\)
2 \(30 \mathrm{~ms}^{-1}\)
3 \(40 \mathrm{~ms}^{-1}\)
4 \(42 \mathrm{~ms}^{-1}\)
Explanation:
B According to the equation given in question \(s=30 t+5 t^{2}\) \(\therefore \quad \mathrm{v}=\frac{\mathrm{ds}}{\mathrm{dt}}=30+10 \mathrm{t}\) For initial velocity \(\mathrm{t}=0, \mathrm{v}=\mathrm{u}\) \(\mathrm{u}=30 \mathrm{~m} / \mathrm{s}\)
AP EAMCET (23.09.2020) Shift-I
Motion in One Dimensions
141243
A particle covers half of the circle of radius \(r\). Then the displacement and distance of the particle are respectively
1 \(2 \pi \mathrm{r}, 0\)
2 \(2 \mathrm{r}, \pi \mathrm{r}\)
3 \(\frac{\pi \mathrm{r}}{2}, 2 \mathrm{r}\)
4 \(\pi \mathrm{r}, \mathrm{r}\)
Explanation:
B When a particle covers half of a circle of radius \(r\), then displacement is \(\mathrm{AB}=\) diameter \(=2 \mathrm{r}\) And The distance of the particle ACD \(=\frac{\text { Perimeter of circle }}{2}\)
VITEEE-2019
Motion in One Dimensions
141244
A particle is revolving in a circle with increasing its speed uniformly. Which of the following is constant?
1 Centripetal acceleration
2 Tangential acceleration
3 Angular acceleration
4 None of these
Explanation:
B (a) Centripetal force is not constant centripetal force directly proportional to square of speed and speed is increasing uniformly. (b) Tangential acceleration is constant because speed along the circular path increases uniformly. Only constant acceleration will give uniform increase of speed. (c) Angular acceleration is also constant. Tangential acceleration is the product of angular acceleration and radius of circular path. If the particle is restricted to move in the circular path of constant radius, then Angular acceleration is constant.
HP CET-2018
Motion in One Dimensions
141265
For ordinary terrestrial experiments, the observer in an inertial frame in the following cases is :
1 A child revolving in a giant wheel
2 A driver in a sports car moving with a constant high speed of \(200 \mathrm{kmh}^{-1}\) on a straight road
3 The pilot of an aeroplane which is taking off
4 A cyclist negotiating a sharp curve
Explanation:
B Every body that is undergo an inertial frame of reference, maintains its position if rest or of motion until the body is acted upon by any external force. In option (b), driver is driving the car with a constant velocity of \(200 \mathrm{kmh}^{-1}\) so, it comes in an inertial frame of reference. - a and d options experience centripetal acceleration. - Option (c) experience linear acceleration in the frame of reference.
141224
The displacement of a particle moving with uniform acceleration in time \(t\) is given by \(s=\) \(30 t+5 t^{2}\), its initial velocity is
1 \(35 \mathrm{~ms}^{-1}\)
2 \(30 \mathrm{~ms}^{-1}\)
3 \(40 \mathrm{~ms}^{-1}\)
4 \(42 \mathrm{~ms}^{-1}\)
Explanation:
B According to the equation given in question \(s=30 t+5 t^{2}\) \(\therefore \quad \mathrm{v}=\frac{\mathrm{ds}}{\mathrm{dt}}=30+10 \mathrm{t}\) For initial velocity \(\mathrm{t}=0, \mathrm{v}=\mathrm{u}\) \(\mathrm{u}=30 \mathrm{~m} / \mathrm{s}\)
AP EAMCET (23.09.2020) Shift-I
Motion in One Dimensions
141243
A particle covers half of the circle of radius \(r\). Then the displacement and distance of the particle are respectively
1 \(2 \pi \mathrm{r}, 0\)
2 \(2 \mathrm{r}, \pi \mathrm{r}\)
3 \(\frac{\pi \mathrm{r}}{2}, 2 \mathrm{r}\)
4 \(\pi \mathrm{r}, \mathrm{r}\)
Explanation:
B When a particle covers half of a circle of radius \(r\), then displacement is \(\mathrm{AB}=\) diameter \(=2 \mathrm{r}\) And The distance of the particle ACD \(=\frac{\text { Perimeter of circle }}{2}\)
VITEEE-2019
Motion in One Dimensions
141244
A particle is revolving in a circle with increasing its speed uniformly. Which of the following is constant?
1 Centripetal acceleration
2 Tangential acceleration
3 Angular acceleration
4 None of these
Explanation:
B (a) Centripetal force is not constant centripetal force directly proportional to square of speed and speed is increasing uniformly. (b) Tangential acceleration is constant because speed along the circular path increases uniformly. Only constant acceleration will give uniform increase of speed. (c) Angular acceleration is also constant. Tangential acceleration is the product of angular acceleration and radius of circular path. If the particle is restricted to move in the circular path of constant radius, then Angular acceleration is constant.
HP CET-2018
Motion in One Dimensions
141265
For ordinary terrestrial experiments, the observer in an inertial frame in the following cases is :
1 A child revolving in a giant wheel
2 A driver in a sports car moving with a constant high speed of \(200 \mathrm{kmh}^{-1}\) on a straight road
3 The pilot of an aeroplane which is taking off
4 A cyclist negotiating a sharp curve
Explanation:
B Every body that is undergo an inertial frame of reference, maintains its position if rest or of motion until the body is acted upon by any external force. In option (b), driver is driving the car with a constant velocity of \(200 \mathrm{kmh}^{-1}\) so, it comes in an inertial frame of reference. - a and d options experience centripetal acceleration. - Option (c) experience linear acceleration in the frame of reference.
141224
The displacement of a particle moving with uniform acceleration in time \(t\) is given by \(s=\) \(30 t+5 t^{2}\), its initial velocity is
1 \(35 \mathrm{~ms}^{-1}\)
2 \(30 \mathrm{~ms}^{-1}\)
3 \(40 \mathrm{~ms}^{-1}\)
4 \(42 \mathrm{~ms}^{-1}\)
Explanation:
B According to the equation given in question \(s=30 t+5 t^{2}\) \(\therefore \quad \mathrm{v}=\frac{\mathrm{ds}}{\mathrm{dt}}=30+10 \mathrm{t}\) For initial velocity \(\mathrm{t}=0, \mathrm{v}=\mathrm{u}\) \(\mathrm{u}=30 \mathrm{~m} / \mathrm{s}\)
AP EAMCET (23.09.2020) Shift-I
Motion in One Dimensions
141243
A particle covers half of the circle of radius \(r\). Then the displacement and distance of the particle are respectively
1 \(2 \pi \mathrm{r}, 0\)
2 \(2 \mathrm{r}, \pi \mathrm{r}\)
3 \(\frac{\pi \mathrm{r}}{2}, 2 \mathrm{r}\)
4 \(\pi \mathrm{r}, \mathrm{r}\)
Explanation:
B When a particle covers half of a circle of radius \(r\), then displacement is \(\mathrm{AB}=\) diameter \(=2 \mathrm{r}\) And The distance of the particle ACD \(=\frac{\text { Perimeter of circle }}{2}\)
VITEEE-2019
Motion in One Dimensions
141244
A particle is revolving in a circle with increasing its speed uniformly. Which of the following is constant?
1 Centripetal acceleration
2 Tangential acceleration
3 Angular acceleration
4 None of these
Explanation:
B (a) Centripetal force is not constant centripetal force directly proportional to square of speed and speed is increasing uniformly. (b) Tangential acceleration is constant because speed along the circular path increases uniformly. Only constant acceleration will give uniform increase of speed. (c) Angular acceleration is also constant. Tangential acceleration is the product of angular acceleration and radius of circular path. If the particle is restricted to move in the circular path of constant radius, then Angular acceleration is constant.
HP CET-2018
Motion in One Dimensions
141265
For ordinary terrestrial experiments, the observer in an inertial frame in the following cases is :
1 A child revolving in a giant wheel
2 A driver in a sports car moving with a constant high speed of \(200 \mathrm{kmh}^{-1}\) on a straight road
3 The pilot of an aeroplane which is taking off
4 A cyclist negotiating a sharp curve
Explanation:
B Every body that is undergo an inertial frame of reference, maintains its position if rest or of motion until the body is acted upon by any external force. In option (b), driver is driving the car with a constant velocity of \(200 \mathrm{kmh}^{-1}\) so, it comes in an inertial frame of reference. - a and d options experience centripetal acceleration. - Option (c) experience linear acceleration in the frame of reference.
141224
The displacement of a particle moving with uniform acceleration in time \(t\) is given by \(s=\) \(30 t+5 t^{2}\), its initial velocity is
1 \(35 \mathrm{~ms}^{-1}\)
2 \(30 \mathrm{~ms}^{-1}\)
3 \(40 \mathrm{~ms}^{-1}\)
4 \(42 \mathrm{~ms}^{-1}\)
Explanation:
B According to the equation given in question \(s=30 t+5 t^{2}\) \(\therefore \quad \mathrm{v}=\frac{\mathrm{ds}}{\mathrm{dt}}=30+10 \mathrm{t}\) For initial velocity \(\mathrm{t}=0, \mathrm{v}=\mathrm{u}\) \(\mathrm{u}=30 \mathrm{~m} / \mathrm{s}\)
AP EAMCET (23.09.2020) Shift-I
Motion in One Dimensions
141243
A particle covers half of the circle of radius \(r\). Then the displacement and distance of the particle are respectively
1 \(2 \pi \mathrm{r}, 0\)
2 \(2 \mathrm{r}, \pi \mathrm{r}\)
3 \(\frac{\pi \mathrm{r}}{2}, 2 \mathrm{r}\)
4 \(\pi \mathrm{r}, \mathrm{r}\)
Explanation:
B When a particle covers half of a circle of radius \(r\), then displacement is \(\mathrm{AB}=\) diameter \(=2 \mathrm{r}\) And The distance of the particle ACD \(=\frac{\text { Perimeter of circle }}{2}\)
VITEEE-2019
Motion in One Dimensions
141244
A particle is revolving in a circle with increasing its speed uniformly. Which of the following is constant?
1 Centripetal acceleration
2 Tangential acceleration
3 Angular acceleration
4 None of these
Explanation:
B (a) Centripetal force is not constant centripetal force directly proportional to square of speed and speed is increasing uniformly. (b) Tangential acceleration is constant because speed along the circular path increases uniformly. Only constant acceleration will give uniform increase of speed. (c) Angular acceleration is also constant. Tangential acceleration is the product of angular acceleration and radius of circular path. If the particle is restricted to move in the circular path of constant radius, then Angular acceleration is constant.
HP CET-2018
Motion in One Dimensions
141265
For ordinary terrestrial experiments, the observer in an inertial frame in the following cases is :
1 A child revolving in a giant wheel
2 A driver in a sports car moving with a constant high speed of \(200 \mathrm{kmh}^{-1}\) on a straight road
3 The pilot of an aeroplane which is taking off
4 A cyclist negotiating a sharp curve
Explanation:
B Every body that is undergo an inertial frame of reference, maintains its position if rest or of motion until the body is acted upon by any external force. In option (b), driver is driving the car with a constant velocity of \(200 \mathrm{kmh}^{-1}\) so, it comes in an inertial frame of reference. - a and d options experience centripetal acceleration. - Option (c) experience linear acceleration in the frame of reference.
