## Q1 A body is moving with constant speed it acceleration.

• (a) must be non-zero.
• (b) must be zero.
• (c) may be non-zero and constant.
• (d) may be non-zero and variable.

• (b) must be zero.

## Q2 Velocity of an object is variable. Then

• (a) its acceleration may remain constant.
• (b) its speed may remain constant.
• (c) its average acceleration may remain constant.
• (d) all of these.

• (d) all of these.

## Q3  Acceleration of a moving body can be found from

• (a) Slope of the velocity time graph.
• (b) Slope of distance time graph.
• (c) Area under distance time graph.
• (d) the area under velocity time graph.

• (a) Slope of the velocity time graph.

## Q4 The dependence of velocity of a body with time is given by the equation v = 20+0.1t^{2}

• (a) Non uniform acceleration
• (b) zero acceleration
• (c) uniform acceleration
• (d) none of these.

• (d) none of these.

• a) True
• b) False

• a) True

## Q6 Average acceleration of a body during given time interval is given by the slope of its

• a) Position – time graph
• b) Velocity – time graph
• c) Speed – time graph
• d) Velocity – displacement graph

• b) Velocity – time graph

## Q7  Area under velocity time graph tells us about

• a) Displacement
• b) Speed
• c) Acceleration
• d) Distance

• a) Displacement

## Q8 SI unit of uniform acceleration is

• a) m/sec
• b) \frac{m}{s^{2}}
• c) m.sec
• d) ms^{2}

• b) \frac{m}{s^{2}}

## Q9.  Velocity of an object in a Retardation motion

• a) Increases
• b) Remains same
• c) Decreases
• d) First increases then decreases

• c) Decreases

## Q10 Example of uniformly accelerated motion

• a) Freely falling body
• b) Ball dropped from top of a ladder
• c) A bicycle whose brakes have been engaged
• d) All of above

• d) All of above