1. The acceleration of a moving body can be found from

a) Area under velocity-time graph

b) Area under distance-time graph

c) Slope of the velocity-time graph

d) Slope of distance-time graph

Explanation:

2. The initial velocity of a particle is u (at t = 0) and the acceleration f is given by at . Which of
the following relation is valid

a) \[v=u+at^{2}\]

b) \[v=u+a\frac{t^{2}}{2}\]

c) \[v=u+at\]

d) \[v=u\]

Explanation:

3. The initial velocity of the particle is 10 m / sec and its retardation is \[2m\diagup sec^{2}\] . The distance moved by
the particle in 5th second of its motion is

a) 1 m

b) 19 m

c) 50 m

d) 75 m

Explanation:

4. 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

a) \[20m\diagup sec^{2}\]

b) \[-20m\diagup sec^{2}\]

c) \[-40m\diagup sec^{2}\]

d) \[+2m\diagup sec^{2}\]

Explanation:

5. The velocity of a body moving with a uniform acceleration of \[2m\diagup sec^{2}\] is 10 m / sec . Its velocity after an interval of 4 sec is

a) \[12 m\diagup sec\]

b) \[14 m\diagup sec\]

c) \[16 m\diagup sec\]

d) \[18 m\diagup sec\]

Explanation: v = u + at = 10 + 2 * 4 = 18 m /sec

6. A particle starting from rest travels a distance x in first 2 seconds and a distance y in next two seconds, then

a) \[Y=X\]

b) \[Y=2X\]

c) \[Y=3X\]

d) \[Y=4X\]

Explanation:

7. The initial velocity of a body moving along a straight line is \[7m\diagup s \] . It has a uniform acceleration of \[4m\diagup s^{2}\]. The distance covered by
the body in the 5th second of its motion is

a) 25m

b) 35m

c) 50m

d) 85m

Explanation:

8. The velocity of a body depends on time according to the equation \[V=20+0.1t^{2}\] . The body is undergoing

a) Uniform acceleration

b) Uniform retardation

c) Non-uniform acceleration

d) Zero acceleration

Explanation:

9. Which of the following four statements is false

a) A body can have zero velocity and still be accelerated

b) A body can have a constant velocity and still have a varying speed

c) A body can have a constant speed and still have a varying velocity

d) The direction of the velocity of a body can change when its acceleration is constant

Explanation: Constant velocity means constant speed as well as same direction throughout.

10. 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

a) 1 m/sec

b) 10 m / sec

c) 5 m/sec

d) 2 m/sec

Explanation: