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rectilinear motion

Total questions: 51

Worksheet time: 31mins

Name
Class
Date
1.

Which of the following is a scalar quantity?

a)

acceleration

b)

velocity

c)

distance

d)

displacement

2.

Rate of change of velocity is called-

a)

average speed

b)

average velocity

c)

acceleration

d)

none of these

3.

When an object travels equal distance in equal intervals of time, it is said to be in-

a)

uniform acceleration

b)

non uniform accelration

c)

uniform motion

d)

non uniform motion

4.

Speed of an object is equal to the magnitude of velocity if-

a)

the object is travelling in uniform circular motion

b)

the object is travelling along a straight path

c)

the initial and final positions are same

d)

none of these

5.

An object moving in a circular path with uniform speed experiences a continuous change in its

a)

direction

b)

velocity

c)

speed

d)

both a and b

6.

The numerical ratio of distance to displacement is always

a)

more than 1

b)

equal to one

c)

less than or equal to 1

d)

more than or equal to 1

7.

The nature of s-t graph for rest -

a)

straight line passing through origin

b)

straight line parallel to time axis

c)

straight line perpendicular to time axis

d)

straight line overlapping time axis

8.

Position time graph for zero acceleration -

a)

straight line parallel to time axis

b)

straight line passing through origin

c)

curved line

d)

zig zag line

9.

It is concerned with the geometrically possible motion of a body or system of bodies without consideration of the forces involved.

a)

Statics

b)

Dynamics

c)

Kinetics

d)

Kinematics

10.

It is the study of the motion in space of one or several bodies in which deformation is neglected.

a)

Kinematics

b)

Kinetics

c)

Statics

d)

Dynamics

11.

It deals with the effects of forces upon the motions of material bodies.

a)

Kinematics

b)

Kinetics

c)

Statics

d)

Dynamics

12.

It has a mass but negligible size and shape.

4 lines
13.

Which of the following is the magnitude of velocity?

a)

Position

b)

Speed

c)

Displacement

d)

Acceleration

14.

An idealization of a body that does not deform or change shape.

a)

Rigid Body

b)

Solid Body

c)

Deformable Body

d)

Flexible Body

15.

Positive acceleration of a particle means that its velocity is

a)

Increasing

b)

Decreasing

c)

Constant

d)

Zero

16.

Negative acceleration of a particle means that its velocity is

a)

Increasing

b)

Decreasing

c)

Constant

d)

Zero

17.

The acceleration of a free falling body is denoted by

a)

Deceleration

b)

Gravity

c)

Speed

d)

Velocity

18.

The rectilinear motion of two mobiles are described by the laws of motion:  x1x_1  = 2t (m) and  x2x_2  =9-t (m). To determine the time after which they meet

a)

9 s

b)

3 s

c)

4,5 s

d)

2 s

19.

The rectilinear and uniform motion of a mobile is described by the equation: x= 6- 3t. Determine the position and speed of the mobile

a)

6 m, 3m/s

b)

3 m, 6 m/s

c)

6m, -3m/s

d)

-3m, 6 m/s

20.

The graphical representation of the law of motion of a mobile is shown in the next figure. Determine the speed of the mobile in the interval (11h-13 h)

a)

10 km/h

b)

20 km/h

c)

60 km/h

d)

50 km/h

21.

A train covers 60 miles between 2 p.m. and 4 p.m. How fast was it going at 3 p.m.?

a)

60 mph

b)

30 mph

c)

40 mph

d)

50 mph

22.

When speed and direction of motion of a body do not change then the body will have:

a)

uniform velocity

b)

uniform acceleration

c)

variable acceleration

d)

variable velocity

23.

When we say a body remains in one position for a long time

a)

motion

b)

rest

c)

stationary

d)

none of the above

24.

The unit of linear acceleration is

a)


kg−mkg-m

b)

ms\frac{m}{s}

c)

ms2 \frac{m}{s^{2\ }}

d)

rads2 \frac{rad}{s^{2\ }}

25.

The rate of change of velocity is called ___________

a)

distance

b)

displacement

c)

speed

d)

acceleration

26.

When speed and direction of motion of a body do not change then the body will have:

a)

uniform velocity

b)

uniform acceleration

c)

variable acceleration

d)

variable velocity

27.

A ball thrown straight up takes 8 total seconds to complete its journey all the way up and down. 1 second into its journey and 7 seconds into its journey the magnitude of its velocity will be ______________ and its direction _______________.

a)

opposite, the same

b)

the same, opposite

c)

the same, the same

d)

opposite, opposite

28.

If a ball thrown straight up into the air takes 4 seconds to reach the top (peak), how long will it take to travel from the peak back to the original position?

a)

0s

b)

1s

c)

3s

d)

4s

29.

The fact that an apple and a watermelon, dropped simultaneously from the same height, would hit the ground at the same time indicates that

a)

you don't like apples or watermelons.

b)

greater masses have greater acceleration.

c)

lesser masses have greater acceleration.

d)

acceleration is independent of mass.

30.

The initial horizontal velocity of a projectile is ____ its final horizontal velocity.

a)

less than

b)

equal to

c)

greater than

31.

Which hits the ground first if they start at the same height: a dropped ball or a ball launched with a

horizontal velocity?

a)

the launched ball

b)

the dropped ball

c)

they both hit at the same time

32.
What is the horizontal acceleration of a projectile?
a)
0 m/s2
b)
9.8 m/s2
33.
Two objects of the same mass are launched from the ground. Object A has a launch angle of 45, while Object B has a launch angle of 65. Which object will hit the ground first?
a)
A
b)
B
c)
Both objects hit the ground at the same time
d)
unable to determine with the given information
34.

A car accelerating constantly at 5 m s-2. If its velocity changes from 10 m s-1 to 25 m s-1, calculate the time taken to reach final velocity.

a)

1 s

b)

4 s

c)

2 s

d)

3 s

35.

A lorry accelerating constantly at 5 m s-2. If its velocity changes from 10 m s-1 to 25 m s-1, calculate the displacement of the lorry.

a)

125 m

b)

33.2 m

c)

52.5 m

d)

41.5 m

36.

Which equation is not related to uniform accelerated motion, with an acceleration different from zero

a)

v=v0+atv=v_0+at  

b)

v2 =v02 +2aΔxv^{2\ }=v_0^2\ +2a\Delta x  

c)

Δx =12at2+ v0 t\Delta x\ =\frac{1}{2}at^2+\ v_{0\ }t  

d)

v=Δxtv=\frac{\Delta x}{t}  

37.

An object start from rest and then the velocity become 10 ms-1. The word rest, refer to......

a)

v = 10 ms-1

b)

v = 0 ms-1

c)

a = 10 ms-1

d)

x = 0 m

38.

Which of the following velocity vs. time graphs corresponds to the distance vs. time graph shown?

a)
b)
c)
d)
39.
An example of projectile motion is...
a)
a golf ball being hit
b)
a rocket
c)
a water fountain
d)
all of the above
40.
The projectile will drop below the straight line of projection because...
a)
the force of gravity acting upon it
b)
it looses speed
c)
it no longer accelerates
d)
all of the above
41.
Will gravity affect the cannonball's horizontal motion?
a)
Yes
b)
No
42.

A boy throws a ball at an angle of 30º at a speed of 20 m/s. What is vertical component of velocity and what is the horizontal component of velocity?

a)

15 m/s , 12.5 m/s

b)

20 m/s, 15 m/s

c)

10 m/s , 17.32 m/s

d)

12.5 m/s, 12.5 m/s

43.
During which interval is the object speeding up?
a)
A to B
b)
B to C
c)
D to E
d)
E to F
44.
During which interval is the object slowing down?
a)
A to B
b)
D to E
c)
E to F
d)
G to H
45.
Which runner stopped for a rest?
a)
Albert
b)
Bob
c)
Charlie
46.
This is a velocity-time graph.  What is the object doing in segment A?
a)
Positive acceleration
b)
Negative acceleration
c)
Constant Velocity
d)
Not moving
47.

The path followed by a projectile is also known as its

a)

trajectory

b)

range

c)

height

d)

vertical displacement

48.

Once a projectile is launched, what is the only force that affects its motion?

a)

mass

b)

friction

c)

inertia

d)

gravity

49.

Which of the following statements about the horizontal and vertical components of projectile motion is true?

a)

Changes in the horizontal component occur only when the vertical component changes.

b)

Both the horizontal and vertical components are always constant.

c)

The vertical component changes while the horizontal component stays the same.

d)

The horizontal and vertical components are dependent of each other.

50.
A truck driving at 60 miles per hour travels 150 miles. How long is it driving for?
a)
9000 hours
b)
0.4 hours
c)
210 hours
d)
2.5 hours
51.

Victor Velocity is standing on top of the roof of his house, firing stones with his slingshot over a level field. He is aiming straight outward, horizontally. If Victor pulls back harder on the sling to shoot a stone, which of the following quantities will be changed?

a)

The vertical displacement of the stone.

b)

The distance the stone travels, and the horizontal velocity.

c)

The time it takes the stone to strike the ground, and the horizontal velocity.

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