Kadhir Unit 2 Physics!

Physics!

force

a push or a pull

acceleration

a change in velocity

velocity

distance/time with direction

speed

distance over time

unit for speed

m/s

unit for velocity

m/s with direction

unit for acceleration

m/s 2 (squared)

unit for Force

N - newtons

Julie ran 25 meters in 10 seconds. What is her speed?

2.5 m/s

What is potential energy?

stored energy in an object

What is kinetic energy?

energy in motion in an object

Where is potential energy the highest?

At the top of a ramp

Where is kinetic energy the highest?

at the bottom of the ramp

What is gravitational potential energy?

the higher an object is

if the forces are balanced

does the object move?

if the forces are unbalanced

does the object move?

What is Newton's 1st Law?

an object at rest

What is Newton's 2nd Law?

F\=ma (Force \= mass times acceleration)

What is Newton's 3rd Law?

action - reaction. For every action

Which Law of motion is it when you continue to go forward in the car when someone slams on the brakes?

1st Law

Which Law of motion is it when the balloon is released and it flies through the room.

3rd Law

Which law of motion is it when the shopping cart is harder to push at the end of a shopping trip because it is full than when it was empty at the beginning of the trip?

2nd Law

How much force is needed for a 0.5kg ball to travel at 3 m/s2

1.5 N

A rock at the top of a hill has what type of energy?

potential

A rock falling off the hill has what type of energy?

kinetic

Which direction will a skateboard go if you jump off the skateboard to the right?

left

The penny in the cup experiment demonstrated which law of motion?

1st Law