Speed, Velocity, and Acceleration
Graphing Motion
Force
Motion
Work/Power
Miscellaneous
100
Formula for speed?
distance/time (distance divided by time)
100
Looking at the graph, which person ran faster? Runner A or Runner B
Runner A ran faster
100
What is the unit that force is measured in?
Newtons (N)
100
The force of an object is equal to its mass multiplied by its acceleration. (Law of acceleration)
(Hint: Newton's First, Second, or Third Law of Motion)
Newton's Second Law of Motion
100
What is the formula for work? Name all units.
Work (J, Joules) = Force (N, Newtons) × Distance (m, meter or km, kilometers)
100
What is the force that pulls objects down to the ground? (What pulls people down towards the center of the Earth?)
Gravity
200
What is speed with a direction?
Velocity
200
Looking at the graph, which runner ran at a constant speed the entire race?
Maria
200
In order to slide a heavy box across the floor, you need to continually push in order to overcome the _____________ that is created by the floor. (Hint: resistance in the opposite direction)
friction
200
For every action there is an equal and opposite reaction. (Law of action and reaction)
(Hint: Newton's First, Second, or Third Law of Motion)
Newton's Third Law of Motion
200
What is the formula for power? Name all units.
Power (W, Watts) = Work (J, Joules) / time (s, seconds or m, minutes, or h, hours)
200
True or false: Mass and weight are the same thing and both are affected by gravity.
False!
300
What is a change in velocity which is usually measured in m/s2 called?
Acceleration
300
Looking at the graph, which runner(s) stopped in the middle of their race?
Alberto and John
300
The following forces are being applied to a box as pictured below.
a) What direction will the box move in?
b) What is the net force exerted on the box?
a) Box will move to the right
b) The net force is 20 N
300
An object at rest will remain at rest and an object in motion will remain in motion until acted upon by an unbalanced force. (Law of inertia)
(Hint: Newton's First, Second, or Third Law of Motion)
Newton's First Law of Motion
300
How much work does a person do if they push a cart with a mass of 30 kg across 10 meters with a force of 40 N? (hint: W = f x d)
400 Joules
300
Mass is measured in _________ whereas weight is measured in ____________.
Grams/kilograms ; Newtons
400
What is the velocity of a car which goes 360 kilometers in 4 hours West?
90 km/h West
400
Looking at the graph, describe what happened to John's race (hint: beginning, middle, and end).
At the beginning of the race, John ran at a constant speed. In the middle of the race, John stopped/took a break. Finally, John ran back to the starting point.
400
Person 1 and Person 2 are each pushing a box, and both of them are pushing with equal force. Knowing that they are pushing with the same force, which of the following is true about their acceleration?
a) Person 1 will have a higher acceleration
b) Person 2 will have a higher acceleration
c) Person 1 and Person 2 will have the same acceleration
b) Person 2 will have a higher acceleration
400
Which of the three laws of motion is being demonstrated in the picture below?
Newton's Second Law of Motion
400
A machine does 30 J of work in 10 seconds. How much power is that? (hint: p = w/t)
3 Watts
400
The amount of matter in an object is known as _________.
The measure of the gravitational force acting on an object is known as ______________.
Mass ; Weight
500
What is the acceleration of a ball which has an initial velocity of 20 m/s and a final velocity of 0 m/s over the course of 40 seconds?
(hint:
a=(vf - vi)/t
)
-0.5 m/s2
500
Looking at the graph, calculate Maria's average speed.
7.69 km/hr or 7.7 km/hr
500
You give a shopping cart a shove down the aisle. The cart is full of groceries and has a mass of 15 kg. The cart accelerates at a rate of 3 m/s2. How much force did you exert on the cart? (hint: f=m x a)
45 Newtons
500
In order, which of the following three laws of motion are being demonstrated in the two pictures below?\
1. 
2. 
1. Newton's Third Law of Motion
2. Newton's First Law of Motion
500
How much power does it take to lift 30 Newtons 10 meters high in 5 seconds?
60 Watts
500
Define motion:
Motion is a change in ____________ relative to another object.
Motion is a change in POSITION relative to another object.