Vocabulary
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Review Questions
NJ Ask Questions
100
Define acceleration.
What is a change in an object's speed of direction?
100
Define inertia.
What is the tendency of objects to keep doing what they're doing?
100
Define Newton's third law of motion.
What is for every action there is and equal and opposite reaction?
100
If you hit a home run in space, what would happen?
What is friction and gravity would slow down the baseball down when in motion. IF the ball hit in outer space it would move in a straight line at constant speed until it came under the influence of gravity from another body such as a star or planet?
100
Which of the following is an example of a contact force? A-Electricity B. Friction C. Gravity D. Magnetism
What is B. Friction?
200
Define contact force.
What is a force that much touch an object to change its speed and/or direction?
200
Define net force.
What is the amount by which the opposing forces acting on a object are unequal?
200
Define noncontact force.
What is a force that acts on an object to change its speed or direction from a distance?
200
Suppose Sharon rides her bike at a speed of 10 m/s. As she rides up a hill, her speed decreases to 5 m/s. Is her acceleration positive or negative?
What is Sharon's acceleration is negative because she's going against gravity?
200
In which situation are the forces acting on the object balanced? A. A car turns a corner at a constant speed B. A minivan slows as it approaches a stoplight C. A hot air-balloon rises at a constant speed D. A skateboarder picks up speed as she skates down a hill
What is C. A hot air balloon rises at a constant speed
300
Define force.
What is a push or pull that cause something to change its motion?
300
Define newton.
What is the metric unit sued to measure force or weight?
300
Define normal force.
What is the force that pushes up to support the weight of an object?
300
Suppose Sharon rides her bike down the street in 20 seconds. During this time, her speed remains constant at 5 m/s. What is the value of her acceleration during this time?
What is the force push or pull causes motion of object to change?
300
The net force acting on an object is 0 N. Which of the following best describes the motion of the object? A. The object is not moving B. The object is moving in a straight line at a constant speed C. The object is slowing down D. The object's motion is not changing
What is D. The object's motion is not changing?
400
Define friction.
What is a force the occurs when two things move past each other and rub together?
400
Define Newton's first law of motion.
What is if the force is acting on a object are balanced, the objects will continue doing what it is doing?
400
Gabe kicked a soccer ball across a field. The ball rolled for a while but eventually stopped. If Newton's first law is true, it seems that the ball Gabe kicked should continue tolling forever. Why does the ball stop?
What is the ball stops because of friction causes it to slow down. Friction unbalanced forces?
400
Give an example of the situation in which you apply force to something and it does the following. Goes faster-
What is bike going downhill?
400
Sean pushes a parked car with a force of 80 newtons (N). The car does not move. Which of the following best describes the force that the car exerts on Sean? A.the same amount of force as Sean exerts B.less force than Sean exerts C.no force D.more force than Sean exerts
What is A.the same amount of force as Sean exerts?
500
Define gravity.
What is a force that acts without physical contact to pull two objects toward each other?
500
Define Newton's second law of motion.
What is the acceleration on an object is related to the net force acting on it and the mass of an object?
500
Suppose you are playing baseball and hit a home run. What forces slow down the ball while it is in motion?
What is objects in motion stay in motion, unless acted upon by another force?
500
Give an example of the situation in which you apply force to something and it does the following. Goes slower-
What is riding a bike uphill?
500
Which force has the greatest influence on the structure of solar systems and galaxies? A.electricity B.friction C.gravity D.magnetism
What is C.gravity?
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