The speed of which of the following objects is affected by gravity?
a cruise ship on the ocean
a kite in the sky
a ball falling after being kicked in the air
a soccer ball rolling to the goal
Any change in the speed or direction of an object’s motion is
acceleration
gravity
velocity
friction
A measure of an object’s change in position during a certain amount of time is
speed
velocity
friction
gravity
A push or a pull is a(n)
position
force
friction
gravity
The location of an object in relation to another object or place describes
motion
speed
position
force
The force that acts to pull all objects down to Earth is
gravity
friction
force
speed
An object that is changing its position is in
speed
friction
velocity
motion
A force that acts against the direction of an object’s motion and causes it to slow or stop is
speed
friction
motion
gravity
The speed of an object in a particular direction is its
speed
velocity
motion
gravity
A car traveling down a road approaches a red light. the driver pushes the car’s brakes and the car slows to a stop. what causes the car’s speed to change?
a decrease in velocity
an increase in friction
an increase in velocity
a decrease in friction
Analyze the line graph. What happens tothe object between Point Y and Point Z?
The object is slowing down.
The object’s acceleration is zero.
The object is speeding up.
The object has no velocity.
What is changing as the boy rolls?
velocity
position
acceleration
speed
Renee is throwing a ball high into the air and then catching it. What is the effect ofgravity on the ball?
It pulls the ball back to the ground.
It increases the mass of the ball.
It makes the ball’s speed slow down
It makes the ball’s speed remain constant
A car is stopped at a red light. The light turns green, and the car turns right around a corner. Which property of the car is changing?
position only
speed only
direction only
acceleration
Jen is walking her dog at a constant rate. They keep a constant rate as they turn a corner. Why has their velocity changed?
because their direction changed
because their position changed
because their speed changed
because their force changed
