Free Printable CA3Week3

Worksheets

CA3Week3

Total questions: 20

Worksheet time: 45mins

Name

Class

Date

In an elastic collision, ______ is conserved.

Momentum only

Kinetic Energy only

Both momentum and energy

In a perfectly inelastic collision, ______ is conserved.

Momentum only

Kinetic Energy only

Both momentum and kinetic energy

The momentum of an object depends upon the object's ___________&_____________.

size and shape

mass and speed

mass and veloctiy

mass and energy

Determine the momentum of 1000-kg car moving northward at 20 m/s.........

20000 N

20000 Joules

20000 Kg * m/s

20000 kg * m/s north

Which object listed below has the greatest momentum?

A 0.05 kg object rolling at 0.2 m/s.

A 0.15 kg object rolling at 2 m/s.

A 0.15 kg object rolling at 1 m/s

A 0.4 kg object rolling at 2 m/s.

The total momentum before a collision is _________ the total momentum after a collision.

equal to

less than

more than

It depends on the type of collision

Which of the following has the least amount of momentum?

An ant walking along the ground

An ant at rest

An elephant walking

An elephant running

An impulse depends on

weight and force

force and time

electric charge and time

none of these

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s.
Calculate the impulse on the ball.

1 N.s

6 N.s

66 N.s

None of these

10.

The purpose of crumble zones on a car is to

decrease time of impact.

increase force of impact.

increase the time of impact.

decrease the impulse during impact.

11.

According to kinetic theory of gases, at absolute zero of temperature

Water freezes

Liquid helium freezes

Molecular motion stops

Liquid hydrogen freezes

12.

Which of the following is NOT considered a method of heat transfer?

Convection

Diffusion

Conduction

13.

According to kinetic theory of gases, at absolute zero of temperature

Water freezes

Liquid helium freezes

Molecular motion stops

Liquid hydrogen freezes

14.

On which factor does the average kinetic energy of gas molecules depend?

Nature of the gas

Temperature

Volume

Mass

15.

In heat transfer, heat always flows from the _______________ substance to the _______________ substance.

Hotter to colder

Colder to hotter

Hotter to hotter

Colder to colder

16.

The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of

Convection

Conduction

Radiation

insulation.

17.

What is the formula to calculate heat energy required to raise the temperature of any substance?

Q=mc∆t

Q=mc

Q= ½mv

m=QC

18.

If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________

one reaches a temperature of zero

they both have an equal temperature

one runs out of energy

they both get hotter

19.

A student is investigating the best method for heating marshmallows using an open flame. The student quickly discovers that placing the marshmallow over the flame is more effective than heating the marshmallow on the side of the flame. According to the information above, what type of heat transfer is present when the marshmallow is above the fire that is not present when the marshmallow is on the side of the fire?

conduction

convection

entropy

radiation

20.