Free Printable Unit 1 DQ 3 Review

Worksheets

Unit 1 DQ 3 Review

Total questions: 19

Worksheet time: 22mins

Name

Class

Date

What kind of energy does an object possess when it's resting on top of the hill?

Potential Energy

Chemical Energy

Kinetic Energy

All of the above

What is the formula for Kinetic Energy?

KE = mass x velocity

KE= 1/2 x mass x velocity ²

KE = mass x gravity x height

KE = mass x velocity / 2

The law of energy conservation says the total energy before the change _______ the total energy after it

is less than

is more than

affects

equals

Which 2 letters have the most kinetic energy

W & Y

X & Z

Which form of energy is represented in this image?

kinetic

thermal

potential

radiant

What happens when the ball goes from the highest position to the lowest position

PE and KE increases and decreases together

Impossible to know without knowing the mass of the object

the PE decreases while KE increases

The SI Unit for Energy is

Joule

Potential

Calorie

Kilojoule

A toy car down a ramp loses most of its energy to

friction

sound

heat

gravity

Rearrange the equation for kinetic energy to make mass the subject of the equation.

m = KE/2v²

m = 2KE/v²

m = v²/2KE

m = 2v²/KE

10.

Rearrange the equation for kinetic energy to make velocity the subject of the equation.

v = √(2KE/m)

v² = 2KE/m

v = √(m/2KE)

v = √(KE/2m)

11.

Calculate the kinetic energy of a moving 4 kg object travelling at a velocity of 3 m/s.

18 J

36 J

12 J

6 J

12.

A rabbit of mass 3kg walks at a speed of 0.5m/s. Calculate its kinetic energy.

0.5 J

0.75 J

0.255 J

0.375 J

13.

You throw a ball into the air as shown in the diagram. At what point does the ball have the most gravitational potential energy?

14.

What is the gravitational potential energy (GPE) of a 1 kilogram book that is 1 meter above the ground?

g = 9.8 m/s²

9.8 Joules

1.0 Joule

0.10 Joule

11.8 m/s²

15.

A spring with spring constant 16 N/m is compressed by 0.5 m. How much energy is stored in the spring?

1 J

0.25 J

2 J

16 J

16.

Elastic potential energy is energy in an object that is compressed or __________.

at rest

stretched

in equilibrium

17.

What equation is used to calculate elastic potential energy?

E_{p = m g h}

E_{p = 1/2 k x}²

E_{p = F / E d}

18.

Calculate the elastic potential energy Leo puts into the trampoline mat when he stretches the mat (k= 473 Nm^-1) by 0.35 m.

2.887 J

28.97 J

82.775 J

12.76. J

19.

A Spring launches a rock of mass M into the air. It reaches a height of H above the ground. How would you find the Kinetic energy it had in the beginning?

M x g x H

$\frac{H}{M}$

$\frac{1}{2}MH^2$

H X 10

100 %

Unit 1 DQ 3 Review

Total questions: 19

Worksheet time: 22mins

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