What is the formula for speed? Unit? Scalar or vector?
Speed = Distance / time
S = m/s
scalar
100
What is distance Distance? Formula?
Unit ?
Space between two points.
Distance = X + X◦
meters
100
What is the formula for Kinematic equation 1?
V = V◦ + at
100
What is the formula for Kinematic equation 2?
X = X◦ + V◦t + ½ at2
100
What variables are present in kinematic equation 3?
Velocity
Acceleration
position
200
What is velocity? Units ? Scalar or vector?
Velocity = Displacement / time
V = meters/ second
Vector
200
What is Displacement? Formula ? Unit?
Change in position
∆X = X - X◦
200
Starting from rest, you accelerate at 4.0 m/s2 for 6.0s. What is your final velocity?
24 m/s
200
An airplane starts from rest and accelerates at a constant rate of 3.0 m/s2 for 30.0 s before leaving the ground. How far did it move along the runway?
1350 m
200
What is the acceleration due to gravity on Earth?
9.8 m/s2
300
Explain the difference between scalar and vector?
Scalar = number and unit (measurement)
Vector = number & unit + direction
measurement & direction
300
A car travels 60m to the right and then 30m to the left. What distance has the car traveled?
60 m
300
How much time does it take to accelerate from an initial velocity of 20m/s to a final velocity of 100m/s if your acceleration is 1.5 m/s2?
5.33 m/s
300
A train pulling out of Grand Central Station accelerates from rest at a constant rate.
It covers 800 meters in 20 seconds. What is its rate of acceleration?
4m/s2
300
You accelerate, from rest, at 10m/s2 for a distance of 100m; what is your final velocity?
44.72 m/s
400
A car travels at a speed of 40 m/s for 4.0 s; what is the distance traveled by the car?
Distance = speed x time
160 m
400
You travel 60m to the right and then 30m to the left. What is the magnitude (and direction) of your displacement?
30 m right
400
An object accelerates at a rate of 3 m/s2 for 6 s until it reaches a velocity of 20 m/s. What was its initial velocity?
2m/s
400
An object travels at a constant velocity of 15 m/s for 5.0 seconds. How far does it move during that time?
75 m
400
An object experiences an acceleration of 6.8 m/s2. As a result, it accelerates from rest to 24 m/s. How much distance did it travel during that acceleration?
42.3 meters
500
You travel 60 meters to the left in 20 s and then you travel 60 meters to the right in 30 s; what is your average velocity?
0
500
An object moves from the position +16 m to the position +47 m in 12 s. What is its total displacement? What is its average velocity?
31m right
V = 31m/12s = 2.58 m/s right
500
A rock falls off a cliff and hits the ground 5seconds later.
What velocity did it hit the ground with?
49 m/s
500
A car has a initial velocity of 45 m/s. It accelerates for 4.8 seconds. In this time, the car covers 264 meters. What is its rate of acceleration?
13.64 m/s2
500
A hopper jumps straight up to a height of 1.3 m. With what velocity did it leave the floor?