Speed/Velocity
What is the formula for finding the speed of an object?
s=d/t
What is the formula for finding the acceleration of an object?
a= (vfinal-vo)/t
What is the formula for finding Kinetic energy?
KE=(1/2)mv2
What is the formula for finding Potential Energy?
PE=mgh or PE=N*h
What is the formula for finding force?
f=ma
A train travels 120 km in 2 hours and 30 minutes. What is its average speed?
48 km/hr
A train moves from rest to a speed of 25 m/s in 30 seconds. What is the acceleration of the train?
0.83 m/s2
Calculate the Kinetic Energy of a truck that has a mass of 3000 kg and is moving at 50 m/s.
3,750,000 J
What is g equal to? (acceleration due to gravity)
9.8 m/s2
A 10 kg bowling ball would require what force to accelerate it down an alleyway at a rate of 3 m/s2?
30 newtons
Pete is driving down 7th street. He drives 150 meters in 18 seconds. Assuming he does not speed up or slow down, what is his speed in meters per second?
8.33 m/s
A roller coaster is moving at 25 m/s at the bottom of a hill. Three seconds later it reaches the top of the hill moving at 10 m/s. What was the acceleration of the coaster?
-5 m/s2
Calculate the kinetic energy of a 1.8 kg volleyball leaving the servers hand at 24 m/s.
518.4 J
Calculate the Potential Energy of a bell in a bell tower. The Bell weighs 215 N and is located 66 m above the ground.
14,190 J
With what force will a car hit a tree if the car has a mass of 4,000 kg and it is accelerating at a rate of 1.5 m/s2?
6000 N
A person jogs 4 km in 32 minutes, then 2 km in 22 minutes, and finally 1 km in 16 minutes. What is the jogger’s average speed in km per minute?
0.1 km/min
How long will it take a car to accelerate from 15.2 m/s to 23.5 m/s if the car has an average acceleration of 3.2 m/s2?
2.6 seconds
Missy Diwater, the former platform diver for the Ringling Brothers' Circus had a kinetic energy of 15,000 J just prior to hitting the bucket of water. If Missy's mass is 50 kg, what was her velocity?
24.5 m/s
The potential energy of a coconut is 8 joules. The coconut is in a tree 8 m off the ground. What is the mass of the coconut?
0.10 kg
What is the acceleration of a softball if it has a mass of 0.25 kg and hits the catcher's glove with a force of 30 newtons?
120 m/s2
George walks to a friend’s house. He walks 500 meters North, then realizes he walked too far. He turns around and walks 150 meters South. The entire walk takes him 18 seconds. What is his speed per second?
36.11 m/s
If a train going 60 m/s hits the brakes, and it takes the train 1 minute and 25 seconds to stop, what is the trains acceleration?
-0.71 m/s2
A bullet has a mass of 0.0039 kg. The muzzle velocity of the bullet coming out of the barrel of the rifle is 1004 m/s. What is the KE of the bullet as it exits the barrel?
1965.63 J
At what height is an object that has a mass of 50 kg, if it Potential Energy is 9800 J?
20 meters
What is the mass of a truck if it is accelerating at a rate of 5 m/s2 and hits a parked car with a force of 14,000 newtons?
2800 kg