In a graph of displacement vs. time, what is the significance of the slope?
Velocity
100
What are the three types of acceleration?
Speeding up, slowing down, and changing direction
100
What is the shape of an angled projectile?
parabolic
100
Which objects has the most inertia...
a.) a 50kg bowling ball traveling at 6m/s north
b.) a 75kg chair traveling at 5m/s east
c.) a 34kg weight traveling at 12m/s east
?
b.) A 75kg chair traveling at 5m/s because it has the most mass.
200
Convert 5000 grams into kg.
5 kg.
200
If a car travels 8 meters per second North for 11 seconds, what is the distance traveled by the car?
88 meters North
200
Isabella was sitting in a car driving east, suddenly she feels her body get thrown forward. In what way was the car accelerated?
The car was accelerated westward (slowed down)
200
A bullet is fired at 4000 meter per second, at the same time a feather is dropped both from 76 meters above the ground. Which one will his the ground first? (Neglect air resistance)
They will hit the ground at the same time
200
A man in "elevator A" normally weighs 50kg. He steps on a scale in the elevator while its moving and it reads 40kg. A man in "elevator B" normally weighs 75kg and steps on the scale in the elevator and it reads 80kg. What is the motion of elevator A & B?
Elevator a is accelerating down.
Elevator b is accelerating upwards.
300
What is 400 + 500 in scientific notation?
9x10^2
(900).
300
Mr. Weilbacher walks 8 meters north and 15 meters east, what is the magnitude of his distance and displacement?
distance: 22 meters
displacement: 17 meters
300
A kid throw his ball straight up at 7 meters per second, what is the velocity of the ball right as it reaches his hands?
7 meters per second downwards
300
A nerf gun is shot from the roof of a house 15 meters above the ground with the bullet moving at 5 meters per seconds East. What is the horizontal velocity of the bullet right before it hits the ground?
5 meters per second East
300
For every ________ there is an equal and opposite _____________.
A. Reaction, action
B. Action, action
C. Reaction, reaction
D. Action, reaction
D. Action, reaction.
400
If bill got an answer of 20 kilograms but the correct answer was 74 kilograms, what was his percent error?
-73% error.
400
A horse was traveling at 5 meters per second, it then sped up at a constant acceleration to 20 meters per second in 6 seconds. What was the acceleration of the horse?
a=2.5 meters per second squared
400
What is the speed of a ball right before it hits the grounds if it is dropped 10 meters above the ground?
14 meters per second downwards
400
A plane is moving at 200 meters per second when it drops a package from 130 meters above the ground. How long in advance will the plane have to drop the package if it wants to hit a target 370 meters away?
5.15 seconds before
400
If a block had an applied force of 40N right and a frictional force of 15N left, what is the net force of the object.
25N right.
500
On a time vs velocity graph, find the acceleration (slope) of an object who has the points (10,0) and (20,5).
.5 meters per second squared.
500
If a Porsche travels at 10 meters east for 5 seconds and then 18 meters west for the next 5 seconds, what is his average velocity over the entire 10 seconds?
average velocity= .8 meters per second West
500
If a cannon ball is fired straight up at 64 meters per second, how long is it in the air for?
13 seconds
500
Juliana throws a ball up at a 62 degree angle with an initial speed of 9 meters per second. Find both the horizontal and vertical components of the ball while in the air.
Ax=4.2 meters per second,
Ay=7.9 meters per second
500
A 3kg brick is sliding down an incline slope With an angle of 30 degrees. Determine the magnitude of the normal force on the block.