SPEED AND VELOCITY
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NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
MOTION IN A STRIGHT LINE

269722 If the distance between the sun and the earth is\(1.5 \times 10^{11} \mathrm{~m}\) and velocity of light is \(3 \times 10^{8} \mathrm{~m} /\) \(\mathrm{s}\), then thetime taken by a light ray to reach the earth from the sun is

1 \(500 \mathrm{~s}\)
2 500 minute
3 \(50 \mathrm{~s}\)
4 \(5 \times 10^{3} \mathrm{~s}\)
MOTION IN A STRIGHT LINE

269744 If a car covers \(2 / 5^{\text {th }}\) of thetotal distance with \(v_{1}\) speed and \(3 / 5^{\text {th }}\) distance with \(v_{2}\) then average speed is

1 \(\frac{1}{2} \sqrt{v_{1} v_{2}}\)
2 \(\frac{v_{1}+v_{2}}{2}\)
3 \(\frac{2 v_{1} v_{2}}{v_{1}+v_{2}}\)
4 \(\frac{5 v_{1} v_{2}}{3 v_{1}+2 v_{2}}\)
MOTION IN A STRIGHT LINE

269745 Four persons\(A, B, C\) and \(D\) initially at the corners of a square of side length ' \(d\) '. If every person starts moving with same speed \(v\) such that each one faces the other always, the person will meet after time

1 \(\frac{d}{v}\)
2 \(\frac{\sqrt{2} d}{v}\)
3 \(\frac{d}{2 v}\)
4 \(\frac{d}{\sqrt{2} v}\)
MOTION IN A STRIGHT LINE

269746 A manwalkson a straight road from his home to a market \(2.5 \mathrm{~km}\) away with a speed of 5 \(\mathrm{km} / \mathrm{h}\). Finding themarket closed, heinstantly turns and walks back home with a speed of \(7.5 \mathrm{~km} / \mathrm{h}\). What is the (a) magnitude of average velocity and (b) average speed of the man over the timeinterval 0 to \(50 \mathrm{~min}\) (in \(\mathrm{kmph}\) ).

1 0,4
2 0,6
3 0,8
4 0,12
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MOTION IN A STRIGHT LINE

269722 If the distance between the sun and the earth is\(1.5 \times 10^{11} \mathrm{~m}\) and velocity of light is \(3 \times 10^{8} \mathrm{~m} /\) \(\mathrm{s}\), then thetime taken by a light ray to reach the earth from the sun is

1 \(500 \mathrm{~s}\)
2 500 minute
3 \(50 \mathrm{~s}\)
4 \(5 \times 10^{3} \mathrm{~s}\)
MOTION IN A STRIGHT LINE

269744 If a car covers \(2 / 5^{\text {th }}\) of thetotal distance with \(v_{1}\) speed and \(3 / 5^{\text {th }}\) distance with \(v_{2}\) then average speed is

1 \(\frac{1}{2} \sqrt{v_{1} v_{2}}\)
2 \(\frac{v_{1}+v_{2}}{2}\)
3 \(\frac{2 v_{1} v_{2}}{v_{1}+v_{2}}\)
4 \(\frac{5 v_{1} v_{2}}{3 v_{1}+2 v_{2}}\)
MOTION IN A STRIGHT LINE

269745 Four persons\(A, B, C\) and \(D\) initially at the corners of a square of side length ' \(d\) '. If every person starts moving with same speed \(v\) such that each one faces the other always, the person will meet after time

1 \(\frac{d}{v}\)
2 \(\frac{\sqrt{2} d}{v}\)
3 \(\frac{d}{2 v}\)
4 \(\frac{d}{\sqrt{2} v}\)
MOTION IN A STRIGHT LINE

269746 A manwalkson a straight road from his home to a market \(2.5 \mathrm{~km}\) away with a speed of 5 \(\mathrm{km} / \mathrm{h}\). Finding themarket closed, heinstantly turns and walks back home with a speed of \(7.5 \mathrm{~km} / \mathrm{h}\). What is the (a) magnitude of average velocity and (b) average speed of the man over the timeinterval 0 to \(50 \mathrm{~min}\) (in \(\mathrm{kmph}\) ).

1 0,4
2 0,6
3 0,8
4 0,12
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MOTION IN A STRIGHT LINE

269722 If the distance between the sun and the earth is\(1.5 \times 10^{11} \mathrm{~m}\) and velocity of light is \(3 \times 10^{8} \mathrm{~m} /\) \(\mathrm{s}\), then thetime taken by a light ray to reach the earth from the sun is

1 \(500 \mathrm{~s}\)
2 500 minute
3 \(50 \mathrm{~s}\)
4 \(5 \times 10^{3} \mathrm{~s}\)
MOTION IN A STRIGHT LINE

269744 If a car covers \(2 / 5^{\text {th }}\) of thetotal distance with \(v_{1}\) speed and \(3 / 5^{\text {th }}\) distance with \(v_{2}\) then average speed is

1 \(\frac{1}{2} \sqrt{v_{1} v_{2}}\)
2 \(\frac{v_{1}+v_{2}}{2}\)
3 \(\frac{2 v_{1} v_{2}}{v_{1}+v_{2}}\)
4 \(\frac{5 v_{1} v_{2}}{3 v_{1}+2 v_{2}}\)
MOTION IN A STRIGHT LINE

269745 Four persons\(A, B, C\) and \(D\) initially at the corners of a square of side length ' \(d\) '. If every person starts moving with same speed \(v\) such that each one faces the other always, the person will meet after time

1 \(\frac{d}{v}\)
2 \(\frac{\sqrt{2} d}{v}\)
3 \(\frac{d}{2 v}\)
4 \(\frac{d}{\sqrt{2} v}\)
MOTION IN A STRIGHT LINE

269746 A manwalkson a straight road from his home to a market \(2.5 \mathrm{~km}\) away with a speed of 5 \(\mathrm{km} / \mathrm{h}\). Finding themarket closed, heinstantly turns and walks back home with a speed of \(7.5 \mathrm{~km} / \mathrm{h}\). What is the (a) magnitude of average velocity and (b) average speed of the man over the timeinterval 0 to \(50 \mathrm{~min}\) (in \(\mathrm{kmph}\) ).

1 0,4
2 0,6
3 0,8
4 0,12
For More Updates join with Us
MOTION IN A STRIGHT LINE

269722 If the distance between the sun and the earth is\(1.5 \times 10^{11} \mathrm{~m}\) and velocity of light is \(3 \times 10^{8} \mathrm{~m} /\) \(\mathrm{s}\), then thetime taken by a light ray to reach the earth from the sun is

1 \(500 \mathrm{~s}\)
2 500 minute
3 \(50 \mathrm{~s}\)
4 \(5 \times 10^{3} \mathrm{~s}\)
MOTION IN A STRIGHT LINE

269744 If a car covers \(2 / 5^{\text {th }}\) of thetotal distance with \(v_{1}\) speed and \(3 / 5^{\text {th }}\) distance with \(v_{2}\) then average speed is

1 \(\frac{1}{2} \sqrt{v_{1} v_{2}}\)
2 \(\frac{v_{1}+v_{2}}{2}\)
3 \(\frac{2 v_{1} v_{2}}{v_{1}+v_{2}}\)
4 \(\frac{5 v_{1} v_{2}}{3 v_{1}+2 v_{2}}\)
MOTION IN A STRIGHT LINE

269745 Four persons\(A, B, C\) and \(D\) initially at the corners of a square of side length ' \(d\) '. If every person starts moving with same speed \(v\) such that each one faces the other always, the person will meet after time

1 \(\frac{d}{v}\)
2 \(\frac{\sqrt{2} d}{v}\)
3 \(\frac{d}{2 v}\)
4 \(\frac{d}{\sqrt{2} v}\)
MOTION IN A STRIGHT LINE

269746 A manwalkson a straight road from his home to a market \(2.5 \mathrm{~km}\) away with a speed of 5 \(\mathrm{km} / \mathrm{h}\). Finding themarket closed, heinstantly turns and walks back home with a speed of \(7.5 \mathrm{~km} / \mathrm{h}\). What is the (a) magnitude of average velocity and (b) average speed of the man over the timeinterval 0 to \(50 \mathrm{~min}\) (in \(\mathrm{kmph}\) ).

1 0,4
2 0,6
3 0,8
4 0,12
NEET DIGITAL LIBRARY