Chapter Test: Newton's Laws of Motion JEE Physics Free MCQs

The ceiling of a tunnel is of 5m high. What is the maximum horizontal distance that a ball thrown with a speed of 20 m/s, can go without hitting the ceiling of the tunnel ? (Take g = 10 m/s²)

If T₁ and T₂ are the times of flight for two complementary angles, then the range of projectile R is given by -

Average torque on a projectile of mass m, initial speed u and angle of projection θ between initial and final positions P and Q as shown in figure about the point of projection is –

Rank the launch angles for the five paths in the figure below with respect to time of flight, from the shortest time of flight to the longest –

A ball is thrown from a point with a speed v₀ at an angle of projection θ. From the same point and at the same instant, a person starts running with a constant speed v₀/2 to catch the ball. Will the person be able to catch the ball ? If yes, what should be the angle of projection ?

A ball rolls off the top of a stair way with a horizontal velocity of 4.5 m/s. If each step is 0.2 m high and 0.3 m broad, then the ball will strike the n^th step where n is equal to : (g = 10 m/s²)

A projectile can have the same range 'R' for two angles of projection. If 't₁' and 't₂' be the times of flights in the two cases, then the product of the two time of flights is proportional to -

A boy playing on the roof of a 10 m high building throws a ball with a speed of 10ms^–1 at an angle of 30° with the horizontal. How far from the throwing point will the ball be the height of 10 m from the ground ?

A projectile is thrown at angle β with vertical. It reaches a maximum height H. The time taken to reach highest point of its path is –

A body of mass 1kg crosses a point O with a velocity 60 ms^–1. A force of 10N directed towards O begins to act on it. It will again cross O in -

A ball rolls off the top of a strairway horizontally with a velocity of 4.5 m s^–1. Each step is 0.2 m high and 0.3 m wide. If g is 10 m s^–2, then the ball strike the nth step where n is equal to -

A body is projected at angle 45º to horizontal with velocity 20 m/s from ground. If there is an acceleration in horizontal direction of 2 m/s², then calculate horizontal range of this particle-

A cricket ball is thrown at 60° to the horizontal with kinetic energy E. Then the kinetic energy at the highest point is -

A particle projected with the speed u at an angle α with the horizontal acquires a velocity v when it is at an angle β with the horizontal. Then -

It was calculated that a shell when fired from a gun with a certain velocity and at an angle of elevation 5π/36 radians should strike a given target. In actual practice it was found that a hill just prevented in the trajectory. At what angle of elevation should the gun be fired to hit the target.

A stone is thrown form a cliff of height h in a given direction then the speed with which it hits ground -

Time taken by the projectile to reach from A to B is t. Then the distance AB is equal to :

Consider a boy on a trolley who throws a ball with speed 20 m/s at an angle 37º with respect to trolley in direction of motion of trolley which moves horizontally with speed 10 m/s then what will be maximum distance travelled by ball parallel to road -

An aeroplane flying horizontally with a speed of 360 km h^–1 releases a bomb at a height of 490 m from the ground. When will the bomb strike the ground ?

 A student calculates the acceleration of m₁ in figure shown as a₁ = . Which assumption is not required to do this calculation.

 Which graph shows best the velocity-time graph for an object launched vertically into the air when air resistance is given by |D| = bv? The dashed line shows the velocity graph if there were no air resistance.

Two men of unequal masses hold on to the two sections of a light rope passing over a smooth light pulley. Which of the following are possible?

Adjoining figure shows a force of 40 N acting at 30° to the horizontal on a body of mass 5 kg resting on a smooth horizontal surface. Assuming that the acceleration of free-fall is 10 ms^_2, which of the following statements A, B, C, D, E is (are) correct?

[1] The horizontal force acting on the body is 20 N

[2] The weight of the 5 kg mass acts vertically downwards

[3] The net vertical force acting on the body is 30 N

In the system shown in the figure m₁ > m₂. System is held at rest by thread BC. Just after the thread BC is burnt :