A
A car makes a turn and inceases its speed from 10mph to 15mph. This is an example of:
acceleration
What keeps the Earth in orbit around the sun?
gravity
Name the law of motion being described: first, second or third:
Which law states that every object maintains a constant velocity unless acted upon by an unbalanced force?
first
_________________ is similar to speed, but it also gives the direction of the motion.
velocity
_______________ is the force that opposes motion between two surfaces.
Friction
Which of the following requires the strongest force to accelerate?
a cannonball
a soccer ball
a football
a cannonball
What is designed to create friction?
car brakes
airplane wings
parts of an engine
car brakes
When something is moving it is called ____________.
motion
___________________is the change in an object's velocity.
Acceleration
Kristen drives her car 65 miles in 2 hours. What is her average speed?
65/2=32.5 mph
A box sliding down a ramp. Will friction increase or decrease the box's speed?
decrease
Which substance is added to reduce friction?
ice
rubber
oil
gasoline
oil
A push or a pull is called a _______________.
force
Forces that are _________________have a push or pull that is acting on it at even strength.
balanced
A train travels 560 kilometers in 6 hours. What is its speed?
560/6=93.3 km/h
Tony steps on to a bathroom scale exerting a downward force of 100 pounds. What force does the scale exert, or push back?
upward force of 100 pounds
Name the law of motion being described: first, second or third
This law of motion describes the amount of force that must be applied on a car's brakes to make it stop.
second
The distance that an object moves in a given amount of time is called ________________.
speed
___________________ is a type of force that is always acting on us.
Gravity
Ben walks at a steady speed of 3 mph. How long will it take him to travel 3 miles?
3/3=1 mph
A car is sitting still. What could cause the car to move?
a force
Name the law of motion being described: first, second or third:
The blast of the space shuttle from Earth is an example of which law?
third
What is the formula to find speed?
speed = distance/time
____________________ is the tendency of an object to resist any change in motion.
Inertia
Madison rides her bike 45 miles in 5 hours. What is her speed?
45/5=9 mph