Speed
What is the formula for speed?
S=d/t
How far something has moved
Distance
What is the formula for acceleration?
a=(vf-vi)/t
What is the formula for momentum?
p=mv
Draw a distance time graph showing no motion?
Horizontal line
Calculate the speed of a dog running through a field if he is covering 23.7 meters in 54 seconds?
0.44 m/s
Distance an object travels per unit of time
Speed
What is the SI unit for acceleration?
m/s^2
What is the unit for momentum?
kgm/s
Draw a distance time graph showing constant speed.
Diagonal line
How long does it take a bird to fly 400 meters if it travels at a speed of 40 m/s?
10 s
Speed at a given moment in time
Instantaneous Speed
Michelle starts from rest on her bicycle at the top of a hill. After 8.0s she has reached a final velocity of 18m/s. What is Shelly’s acceleration?
2.25 m/s^2
What is the momentum of a 1500 kg car with a velocity of 60 m/s?
90,000 kgm/s
Draw a distance time graph showing acceleration?
Curved line
Joe can pitch his baseball at 42 m/s in 2.5 seconds. What is his distance?
105 m
Distance and direction from the starting position
Displacement
A car increases it's velocity from 5 m/s to 14 m/s in 5 seconds. What is its acceleration?
1.8 m/s^2
A bowling ball of 80 kg generates 420 kgm/s units of momentum. What is the velocity of the bowling ball?
5.25 m/s
Draw a speed time graph showing constant speed
horizontal line
Which object has a greater velocity, a ball rolling down a 3.4 meter hill in six seconds or a fish swimming upstream and covering 5.4 meters in 5 seconds?
The fish swimming upstream
A change in velocity
Acceleration
A car accelerates at a rate of 4.0 m/s^2. If its original speed is 10.0 m/s, how many seconds will it take the car to reach a final speed of 25.0 m/s?
3.75 seconds
A bus traveling at 20 m/s has a momentum of 185230 kgm/s. What is the mass of the bus?
9261.5 kg
Draw a speed time graph showing acceleration
Diagonal line