i check #3

Question 1

If a kid throws a bouncy ball straight into the air it will…

Answer 1

have the most
potential energy when the ball is at its highest position.

Question 2

If a kid throws a bouncy ball straight into the air it will have the most potential energy when the ball is at its highest position.

Answer 2

This is because the Earth’s gravity is the force increasing the ball’s
potential energy the farther it is from the Earth’s surface.

Question 3

If a kid throws a bouncy ball straight into the air it will

Answer 3

have the most
kinetic energy just before the ball hits the ground.

Question 4

If a kid throws a bouncy ball straight into the air it will have the most
kinetic energy just before the ball hits the ground. why

Answer 4

This is because the ball’s kinetic energy increases as it falls towards
Earth.

Question 5

:0

Answer 5

This is because the ball’s kinetic energy increases as it falls towards
Earth.

Question 6

If one person has more kinetic energy than another person who cannot
determine who would win a race. why

Answer 6

You would need more information.

Question 7

Imagine a ball is laying on a flat piece of grass There are ___ forces acting upon the ball

Answer 7

two

Question 8

The ___ force of gravity

Answer 8

downward

Question 9

The___force of the ground

Answer 9

upward

Question 10

Imagine a ball is laying on a flat piece of grass Imagine if someone kicked the ball – how would Sir Isaac Newton
explain what happened to the ball?

Answer 10

▪ The ball would have stayed at rest until another force (the
kick) acted upon it
▪ The ball accelerated when it came into contact with the
person’s foot.
▪ The ball decelerated from friction until it stopped

Question 11

Imagine a jet ski is traveling across the water at 15 m/s. The driver turns
off the engine. What happens to the jet ski as it glides through the water?

Answer 11

o The jet ski will start to move slower and slower
o The friction between the water and the jet ski will decelerate it
o This is Newton’s first law

Question 12

Imagine a person (Person A) is running down the hall at Gwynedd Square and
doesn’t see a person (Person B) standing still in the hall. Person A runs right
into Person B. What is happening?????

Answer 12

o When person A runs into person B, person A’s kinetic energy is
transferred to person B.
o Options for person A: slow down, stop, change direction, fall over
o Options for person B: move away, fall over