Projectile – Oblique Projectile
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PHXI04:MOTION IN A PLANE

361995 At what point of a projectile motion acceleration and velocity are perpendicular to each other

1 At the point of projection
2 At the point of drop
3 At the topmost point
4 Any where in between the point of projection and topmost point
PHXI04:MOTION IN A PLANE

361996 A projectile is projected at an angle \(\left( {\alpha > 45^\circ } \right)\)with an initial velocity \(u\). The time (\(t\)) at which horizontal component will be equal the vertical component

1 \(t = \frac{u}{g}\left( {{{\sin }^2}\alpha - {{\cos }^2}\alpha } \right)\)
2 \(t = \frac{u}{g}\left( {\sin \alpha - \cos \alpha } \right)\)
3 \(t = \frac{u}{{2g}}\left( {\cos \alpha - \sin \alpha } \right)\)
4 \(t = \frac{u}{{2g}}\left( {\cos \alpha + \sin \alpha } \right)\)
PHXI04:MOTION IN A PLANE

361997 A man standing at the top of a building, throws several balls at different angles to the horizontal. All balls are thrown at speed \(u=10 {~m} / {s}\) and it was found that all of them hit the ground making an angle of \(45^{\circ}\) or larger than that with the horizontal. Find the height of the building.
(Take \(\left.g=10 {~m} / {s}^{2}\right)\)

1 \(2\,m\)
2 \(7\,m\)
3 \(5\,m\)
4 \(1\,m\)
PHXI04:MOTION IN A PLANE

361998 In projectile motion, the modulus of rate of change of velocity -

1 First increases, then decreases
2 Is constant
3 First decreases, then increases
4 None of the above
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PHXI04:MOTION IN A PLANE

361995 At what point of a projectile motion acceleration and velocity are perpendicular to each other

1 At the point of projection
2 At the point of drop
3 At the topmost point
4 Any where in between the point of projection and topmost point
PHXI04:MOTION IN A PLANE

361996 A projectile is projected at an angle \(\left( {\alpha > 45^\circ } \right)\)with an initial velocity \(u\). The time (\(t\)) at which horizontal component will be equal the vertical component

1 \(t = \frac{u}{g}\left( {{{\sin }^2}\alpha - {{\cos }^2}\alpha } \right)\)
2 \(t = \frac{u}{g}\left( {\sin \alpha - \cos \alpha } \right)\)
3 \(t = \frac{u}{{2g}}\left( {\cos \alpha - \sin \alpha } \right)\)
4 \(t = \frac{u}{{2g}}\left( {\cos \alpha + \sin \alpha } \right)\)
PHXI04:MOTION IN A PLANE

361997 A man standing at the top of a building, throws several balls at different angles to the horizontal. All balls are thrown at speed \(u=10 {~m} / {s}\) and it was found that all of them hit the ground making an angle of \(45^{\circ}\) or larger than that with the horizontal. Find the height of the building.
(Take \(\left.g=10 {~m} / {s}^{2}\right)\)

1 \(2\,m\)
2 \(7\,m\)
3 \(5\,m\)
4 \(1\,m\)
PHXI04:MOTION IN A PLANE

361998 In projectile motion, the modulus of rate of change of velocity -

1 First increases, then decreases
2 Is constant
3 First decreases, then increases
4 None of the above
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PHXI04:MOTION IN A PLANE

361995 At what point of a projectile motion acceleration and velocity are perpendicular to each other

1 At the point of projection
2 At the point of drop
3 At the topmost point
4 Any where in between the point of projection and topmost point
PHXI04:MOTION IN A PLANE

361996 A projectile is projected at an angle \(\left( {\alpha > 45^\circ } \right)\)with an initial velocity \(u\). The time (\(t\)) at which horizontal component will be equal the vertical component

1 \(t = \frac{u}{g}\left( {{{\sin }^2}\alpha - {{\cos }^2}\alpha } \right)\)
2 \(t = \frac{u}{g}\left( {\sin \alpha - \cos \alpha } \right)\)
3 \(t = \frac{u}{{2g}}\left( {\cos \alpha - \sin \alpha } \right)\)
4 \(t = \frac{u}{{2g}}\left( {\cos \alpha + \sin \alpha } \right)\)
PHXI04:MOTION IN A PLANE

361997 A man standing at the top of a building, throws several balls at different angles to the horizontal. All balls are thrown at speed \(u=10 {~m} / {s}\) and it was found that all of them hit the ground making an angle of \(45^{\circ}\) or larger than that with the horizontal. Find the height of the building.
(Take \(\left.g=10 {~m} / {s}^{2}\right)\)

1 \(2\,m\)
2 \(7\,m\)
3 \(5\,m\)
4 \(1\,m\)
PHXI04:MOTION IN A PLANE

361998 In projectile motion, the modulus of rate of change of velocity -

1 First increases, then decreases
2 Is constant
3 First decreases, then increases
4 None of the above
NEET DIGITAL LIBRARY
PHXI04:MOTION IN A PLANE

361995 At what point of a projectile motion acceleration and velocity are perpendicular to each other

1 At the point of projection
2 At the point of drop
3 At the topmost point
4 Any where in between the point of projection and topmost point
PHXI04:MOTION IN A PLANE

361996 A projectile is projected at an angle \(\left( {\alpha > 45^\circ } \right)\)with an initial velocity \(u\). The time (\(t\)) at which horizontal component will be equal the vertical component

1 \(t = \frac{u}{g}\left( {{{\sin }^2}\alpha - {{\cos }^2}\alpha } \right)\)
2 \(t = \frac{u}{g}\left( {\sin \alpha - \cos \alpha } \right)\)
3 \(t = \frac{u}{{2g}}\left( {\cos \alpha - \sin \alpha } \right)\)
4 \(t = \frac{u}{{2g}}\left( {\cos \alpha + \sin \alpha } \right)\)
PHXI04:MOTION IN A PLANE

361997 A man standing at the top of a building, throws several balls at different angles to the horizontal. All balls are thrown at speed \(u=10 {~m} / {s}\) and it was found that all of them hit the ground making an angle of \(45^{\circ}\) or larger than that with the horizontal. Find the height of the building.
(Take \(\left.g=10 {~m} / {s}^{2}\right)\)

1 \(2\,m\)
2 \(7\,m\)
3 \(5\,m\)
4 \(1\,m\)
PHXI04:MOTION IN A PLANE

361998 In projectile motion, the modulus of rate of change of velocity -

1 First increases, then decreases
2 Is constant
3 First decreases, then increases
4 None of the above
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