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9th quiz - 3(Laws of motion) by PRABHAKAR MIRIYALA

Total questions: 25

Worksheet time: 8mins

Name
Class
Date
1.

"For every action, there is an equal and opposite reaction."This is

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Pascal's law

2.

Force = Mass x Acceleration is the

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

pascal's law

3.

"An object in motion (or at rest) will to stay in motion (or at rest) until an external force acts upon it." this statement is

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Pascal's law

4.

The tendency of an object to resist changes in its motion is...

a)

inertia

b)

force

c)

acceleration

d)

velocity

5.

Any push or pull on an object is called

a)

force

b)

velocity

c)

inertia

d)

momentum

6.

The force that opposes motion between two surfaces in contact with each other is called

a)

inertia

b)

friction

c)

momentum

d)

gravity

7.

When all the forces act on an object are equal and opposite, & the net force is zero, then the forces are called as

a)

balanced forces

b)

unbalanced forces

c)

terminal velocity

d)

reaction forces

8.

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them. which law is assiciated with this

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

all the above

9.

What can a force do?

a)

change the direction of the motion

b)

start a motion

c)

stop a motion

d)

all of the above

10.

Which has more Inertia?

a)

truck

b)

ant

c)

cat

d)

bicycle

11.

An object will always move in the direction of the _______ force.

a)

larger

b)

smaller

c)

equal

d)

larger mass

12.

Which type of force(s) will cause a change in an object's motion?

a)

gravity

b)

zero force

c)

balanced forces

d)

unbalanced forces

13.

If an object is at rest (not moving) the forces acting upon it are _____________

a)

unbalanced

b)

weak

c)

balanced

d)

magnetic forces

14.

Which law explains why a person in a car slides to the right when going through a very sharp left turn on the highway.

a)

1st Law of motion

b)

2nd Law of motion

c)

3rd Law of motion

d)

All the above

15.

An object will not have any inertia if it is _?

a)

accelerating

b)

moving in a circular path

c)

rest

d)

all objects have inertia

16.

Momentum =

a)

mass x acceleration

b)

mass x velocity

c)

speed/time

d)

distance/time

17.
The SI units for force are...
a)
Kilograms
b)
Newtons
c)
Meters per second
d)
Pounds
18.
A crumpled piece of paper hits the ground before a flat sheet of paper because
a)
the acceleration of gravity is greater on the  crumpled paper.
b)
there is more air resistance against the flat paper.
c)
the crumpled paper is more massive
d)
the crumpled paper is less massive.
19.
According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will
a)
remain in motion.
b)
eventually come to a stop.
c)
change its momentum.
d)
accelerate.
20.

If a force of 25 N is exerted on two balls, one with a mass of 5 kg and the other with a mass of 7 kg, which ball will have the greater acceleration? (F=ma)

a)

The one with a mass of 7 kg will have the greatest acceleration.

b)

The one with a mass of 5 kg will have the greatest acceleration.

c)

They will both accelerate at the same rate.

d)

can't say

21.

Two masses are in the ratio 1:4, then the ratio of their inertia is .........

a)

1:1

b)

1:4

c)

4:1

d)

1:2

22.

Action - Reaction forces at on

a)

same body

b)

different bodies

c)

none of the bodies

d)

all the above

23.

Which of the following is the universal formula

a)

Fnet = ma

b)

F net = ΔpΔt\frac{\Delta p}{\Delta t}

c)

both of the above

d)

none of the above

24.

If the mass of the body is constant, The larger the net force the ................... the acceleration.

a)

smaller

b)

greater

c)

equal

d)

can't say

25.

The direction of the momentum is in the direction of ......

a)

mass

b)

velocity

c)

no direction

d)

any direction