Newton's Three Laws Of Motion Question Preview (ID: 60365)
Forces Motion.
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An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of these best explains this situations
a) Newton's first law
b) Newton's second law
c) Newton's third law
d)
What explains why objects resist changes in their state of motion?
a) gravity
b) force
c) inertia
d)
A person steps of a boat onto a dock. As the person moves forward onto the dock, the boat moves backward. Which statement best describes the backward motion of the boat as the person steps forward?
a) For every action there is an equal and opposite reaction.
b) Every mass exerts a force on every other mass.
c) An object at rest tends to stay at rest.
d)
A force in the opposite direction to the motion of the object will cause the object to
a) speed up
b) slow down
c) turn
d)
If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball with have the greater acceleration? (F=ma)
a) The one with a mass of 0.78 kg will have the greatest acceleration.
b) The one with a mass of 0.52 kg will have the greatest acceleration.
c) They will both accelerate at the same rate.
d)
For a force on an object, there is an equal and opposite force. This statement best describes:
a) Newton's first law of motion.
b) Newton's second law of motion.
c) Newton's third law of motion.
d)
Without any force to change it, an object at rest stays at rest and an object in motion stays in motion. This statement best describes:
a) Newton's first law of motion.
b) Newton's second law of motion.
c) Newton's third law of motion.
d)
Acceleration is caused by a force acting on a mass. This statement best describes:
a) Newton's first law of motion.
b) Newton's second law of motion.
c) Newton's third law of motion.
d)
How does Newton's third law explain how a rocket takes off?
a) The rocket's acceleration is positive, while the gases acceleration is negative but the direction is the same.
b) The rocket is at rest until ignition.
c) The hot gasses move in one direction, while the rocket moves in the opposite direction but with equal force.
d)
The SI unit for force is _____
a) kilograms
b) meters/second squared
c) Newton
d)
According to Newton's first law of motion, a moving object that is not acted on by an unbalanced force will
a) change its momentum.
b) remain in motion.
c) accelerate.
d)
A greater applied force is required to move an object with a greater mass than one with a smaller mass.
a) True
b) False
c)
d)
An object at rest will _____ if no outside forces are applied.
a) stay at rest
b) increase velocity
c) decrease velocity
d)
If a 10 kilogram object had a force of 50 newton's applied to it, what would its acceleration be?
a) 15 meters per second squared
b) 5 meters per second squared
c) 0.5 meters per second squared
d)
Objects with greater mass require more force to accelerate than objects with less mass.
a) True
b) False
c)
d)
Newton's Second Law is also known as the Law of _____
a) Inertia
b) Action-Reaction
c) Acceleration
d)
Newton's First Law is also known as the Law of _____
a) Inertia
b) Acceleration
c) Action-Reaction
d)
Isaac Newton stated that for every action there is an
a) unequal and opposite reaction.
b) equal and opposite reaction.
c) equal and same reaction.
d)
An object with a mass of 100 kg is observed accelerating at a rate of 5 meters per second squared. What force is required to produce this acceleration?
a) 500 N
b) 105 N
c) 20 N
d)
Stacy is rowing a boat. She wants the boat to move forward. According to Newton's Third Law, in which direction should she move her paddle in the water?
a) forward
b) backwards
c) to the right
d)
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