The acceleration of a moving body can be found from:
(1) Area under the velocity-time graph
(2) Area under the distance-time graph
(3) Slope of the velocity-time graph
(4) Slope of the distance-time graph
The initial velocity of the particle is 10 m/sec and its retardation is 2 m/sec2. The distance moved by the particle in 5th second of its motion is
(1) 1 m
(2) 19 m
(3) 50 m
(4) 75 m
A motor car moving with a uniform speed of 20 m/sec comes to stop on the application of brakes after travelling a distance of 10 m. Its acceleration is
(1) 20 m/sec2
(2) –20 m/sec2
(3) –40 m/sec2
(4) +2 m/sec2
The velocity of a body moving with a uniform acceleration of 2 m/sec2 is 10 m/sec. Its velocity after an interval of 4 sec is
(1) 12 m/sec
(2) 14 m/sec
(3) 16 m/sec
(4) 18 m/sec
The initial velocity of a body moving along a straight line is 7 m/s. It has a uniform acceleration of 4 m/s2. The distance covered by the body in the 5th second of its motion is
(1) 25 m
(2) 35 m
(3) 50 m
(4) 85 m
The velocity of a body depends on time according to the equation . The body is undergoing
1. Uniform acceleration
2. Uniform retardation
3. Non-uniform acceleration
4. Zero acceleration
Which of the following four statements is false?
(1) A body can have zero velocity and still be accelerated.
(2) A body can have a constant velocity and still have a varying speed.
(3) A body can have a constant speed and still have a varying velocity.
(4) The direction of the velocity of a body can change when its acceleration is constant.
A particle moving with a uniform acceleration travels 24 m and 64 m in the first two consecutive intervals of 4 sec each. Its initial velocity is
(1) 1 m/sec
(2) 10 m/sec
(3) 5 m/sec
(4) 2 m/sec
The position of a particle moving in the XY plane at any time t is given by metres. Select the correct statement about the moving particle from the following.
1. The acceleration of the particle is zero at t = 0 second
2. The velocity of the particle is zero at t = 0 second
3. The velocity of the particle is zero at t = 1 second
4. The velocity and acceleration of the particle are never zero
If body having initial velocity zero is moving with uniform acceleration 8 m/sec2 , then the distance travelled by it in fifth second will be
(1) 36 metres
(2) 40 metres
(3) 100 metres
(4) Zero