First Law of Motion
State the first law of motion
Inertia
or
An object in motion tends to stay in motion and an object at rest tends to stay at rest unless acted upon by an unbalanced force.
State the second law of motion
F=ma
or
Force equals mass times acceleration.
State the third law of motion
For every action there is an equal and opposite reaction.
A 5 kg ball has been hit with a bat and moves at an acceleration of 25 m/s2. What is the force this ball is hit with?
What is 125 N?
The laws of motion were first published in Philosophiae Naturalis Principia Mathematica in 1687 by the English scientist and mathematician named
What is Sir Isaac Newton?
In order to change the motion of an object, it requires
What is force?
Force is _____ to mass and acceleration
a) directly proportional
b) twice the force
c) indirectly proportional
d) unrelated
What is a) directly proportional?
If you push your hands downward against the ground, the body will move in what direction?
What is upward?
A high school bus travels 240 km in 6.0 h. What is its average speed for the trip?
What is 40 km/h?
A measurement of how quickly an object is changing speed is
Two teams are playing tug of war. They are both exerting equal force on the rope in opposite directions. This is an example of what kind of force?
What is a balanced force?
If you double the mass of an object, then the object's force will
What is double?
The acceleration of an object due to the force of gravity is
What is the mass of an object that requires a force of 25 N to accelerate at 5 m/s2?
What is 5 kg?
A book sliding across a table slows down and stops because of the force of
What is friction?
The more mass an object has, the harder it is to change its motion. In other words, objects with more mass have more
What is inertia?
Something moving very fast (high acceleration) and something very slow (low acceleration) hit a wall with the same force. What is the factor that explains this phenomenon?
What is mass?
Gravity is pulling you down in your seat, but according to Newton's third law, your seat is pushing up with how much force?
What is equal force?
A roller coaster pushes a 25 kg person upward with a force of 300 N. What is the acceleration?
What is 12 m/s2?
In outer space, away from gravity and any sources of friction, a rocket ship launched with a certain speed and direction would
What is keep going in that same direction and at that same speed forever?
If you throw a ball upwards it will eventually slow down and fall because of the force of
What is gravity?
Doubling the mass and the acceleration at the same time does what to the force?
What is quadruple?
Two cars collide with one another. They bounce in opposite directions. This transfer of force is an example of
What is momentum?
How much weight (Force due to gravity) is generated by an 75 kg person on planet Earth?
What is 735 N?
The acceleration due to gravity on the moon is
What is 1.6 m/s2?