Show:
Units
Motion
Forces
Newton's Laws
Work and Power
100
The unit of displacement
What is meters
100
A distance runner covers 5000. m in a time of 980. seconds. What was his average speed?
5.10 m/s
100
If you were pushing a cart and suddenly tripled the amount of force that you are using, what will happen to the acceleration of the cart will?
It will triple
100
he acceleration of an object is directly proportional to the force applied to it. This is part of which law?
Newton's 2nd Law
100
In order for work to occur, these two things must happen.
Force and displacement
200
The quantity measured by m/s2
What is acceleration.
200
A runner can go from 6.0 m/s to 14 m/s in 5.0 seconds. What is the runner’s acceleration?
1.6 m/s2
200
What is the weight of a 15 kg dumbbell on Earth?
150 Newtons
200
An object at rest stays at rest unless acted upon by an outside force. This is part of which law?
Newton's 1st Law
200
Power is…
Work/Time
300
Speed and ___________ are both measured using m/s
What is Velocity
300
What does it mean when a negative acceleration is reported?
Slowing down
300
A constant net force acting on an object causes the object to move with constant _____________.
Acceleration
300
A measure of an object’s resistance to changes in motion is known as this.
Inertia
300
If you push with 50.0 N of force and lift a box 1.4 meters, how much work do you do?
70 Joules
400
The 1 Joule/Second is equal to
1 Watt
400
How long does it take an object to travel 220 kilometers at 60.0 km/hr?
3.7 hr
400
A pitcher accelerates a ball at 80.0 m/s2 by exerting a force of 20.0 N. What is the mass of the ball?
0.250 kg
400
When running, the ground pushes back on the runner with the same force that the runner applies to the ground. This is an example of which law?
Newton's 3rd Law
400
How much work is done to hold a 50 N box 1.4 meters off the ground?
Zero Joules
500
1 kg m/s2 is equal to
1 Newton
500
In a distance vs. time graph, what does a curved line always indicate?
Acceleration
500
A 6.8 kg bowling ball is rolled with an acceleration of 4.9 m/s2. What was the force applied?
33 N
500
“Forces always occur in pairs” and “for every action there is an equal and opposite reaction” are statements related to which law?
Newton's 3rd Law
500
How much power is required to lift a 50N chair 0.3 m in 3 seconds?
5 Watts