Spheres
What would cause one of two identical balls to move faster?
More force was applied
Where should you release an object on a ramp if you were investigating motion?
Top of ramp
Which force holds the atmosphere in place around Earth?
Gravity
A first baseman didn't get the ball to home in time and caused a run to be scored. What must be done to get a ball to reach home next time?
Apply greater force
Pam tried to push a desk across the floor but it did not move. Why?
Pam's push push was balanced by the force of friction.
What force will most likely cause a baseball to change direction?
The batter's force
What would exerting more force on a car going down a ramp produce?
A faster travel time for car.
A peach is hanging from a tree limb. Why is this happening?
Gravity pulls down while limb pulls up.
How would placing 50 cans of vegetables in a Publix shopping cart affect the movement of the cart?
More force will be needed as the mass was increased.
Why does an apple on a desk remain motionless and not fall to the ground?
The desk exerts a force equal to the force of gravity but applied in different directions.
What type of force moves an object towards the source of the force?
Pull
If you build two identical ramps and cover one with a rug and one with wax paper, what can you expect to happen with friction?
The ramp with wax paper decreases friction while rug increases friction.
What force pulls a dropped watermelon to the ground
Gravity
You have one box weighing 236 grams and one weighing 813 grams. Which box will be least affected by an applied force?
813 gram box
Why does a bird fly but a dog stay on the ground?
Force of gravity is being overcome by bird
How does friction affect the motion of a ball?
Causes the ball to decrease in speed
Two roller coasters travel the same track. What would cause one of the roller coasters to return to the beginning of track at a slower speed?
More friction then the other one.
What causes tides?
Gravitational effects of the moon and sun.
Which force will most likely cause a softball to change direction?
Batter's force on the ball with a bat
Newton's First Law
An object at rest stays at rest unless acted upon by an outside force
If a bowling ball weighed 8 kg. and another weighed 5 kg. which ne was easier to stop?
5 kg.
Why would a box of books move easier after a push on a ramp than an iron safe?
The safe had more mass than books so force of push had less effect on safe's movement.
The larger an object results in what amount of gravity?
Stronger
How could you describe the forces acting on a object that is not in motion?
Balanced
Newton's Third Law
For every action (force) there is an equal and opposite reaction.