What is the relationship between heavy objects and inertia?
Heavy objects have MORE inertia
100
A golf ball balanced on a tee is at rest.
The golf ball will not move off the tee unless the ball is struck by a golf club.
Newton's 1st Law
100
The unit used for force
Newtons
100
The unit used for mass
Kilograms
100
The unit used for acceleration
m/s2
200
What does friction do to a moving object?
Slows it down
200
Acceleration will INCREASE when a larger force is used on the object.
Newton's Second Law
200
Ali kicks a soccer ball towards the net and causes it to accelerate at a rate of 30 m/s2. If the ball has a mass of 5kg, what is the force acting on the ball?
F = M x A = 5 x 30 = 150 N
200
Logan threw an object out of his window with a force of 80 N. What is the mass of the object if it accelerates at a rate of 40 meters per second squared.
M = 80 /40 = 2 kg
200
A 20 kg swimmer pushes off from a wall with a force of 100N. What is the swimmer’s acceleration?
2,000 meters per second squared
300
Your neighbor is riding her bike around the block. When she slows down and turns a corner, what changes about her?
Her velocity
300
A rabbits legs exert a force onto the ground. The ground exerts a force back up onto the rabbits legs.
Newton's Third Law
300
Michelle is driving a car. How much force is needed to accelerate a 1,000 kg car at a rate of 3 m/s2.
F = 1000 x 3 = 3000 N
300
Which has a greater inertia?
Airplane
Bike
Car
Airplane (greater mass)
300
Which object will accelerate quicker? A car pushed with 10 N of force or a bike pushed with 10 N of force? EXPLAIN
A bike, it has less mass.
400
Which vocabulary term describes an object's tendency to want to stay at rest or remain in motion?
Inertia
(A ball at REST would like to stay at rest)
400
As the mass of an object INCREASES, the amount it will accelerate will DECREASE.
Newton's Second Law
400
An elevator has a mass of 1500 kg. What force is needed to accelerate the elevator at a rate of 2 m/s2.
3000 N
400
Calculate the mass of an object that his thrown with 15 N of force, at a rate of 5 meters per second
3 kg
500
What happens when two objects, such as a baseball and a bat, collide?
They hit each other with the same force in opposite directions
500
What relationship does force and acceleration have?