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+0.1`t^{2}`
- (a) Non uniform acceleration
- (b) zero acceleration
- (c) uniform acceleration
- (d) none of these.
- (d) none of these.
Q5 The magnitude of velocity increases with time such a kind of motion is called accelerated.
- 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) m`s^{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
