Determine the kinetic energy of a 1000-kg roller coaster car that is moving with a speed of 20.0 m/s.
2 points
2
Question 3
3.
What is the kinetic energy if the roller coaster car in the other problem were moving with twice the speed? (40 m/s)
3 points
3
Question 4
4.
By how much did the KE change when the velocity was doubled?
2 points
2
Question 5
5.
Barry Bonds swings a bat which has a mass of 1.5 kg at a velocity of 55 m/s. How many joules of work could he give to a ball?
2 points
2
Question 6
6.
What is the speed of Clark Griswold as he swings from a strand of Christmas Light? His near-death drop contained 178J of energy because his mass increased to 89kg after eating too many sweet potatoes.
2 points
2
Question 7
7.
A soccer ball has 1200 J of heat and a mass of 0.8 kg. What is the speed of the ball when it is kicked?
2 points
2
Question 8
8.
A running back has 3500 J of kinetic energy and is running at a speed of 8 m/s. Calculate his mass.
2 points
2
Question 9
9.
Forky is trying to be thrown into the trash. If a gust of wind pushes Forky at a velocity of 16 m/s with a force of 307.3 J. What is Forky's mass?
2 points
2
Question 10
10.
The Flash's top speed is recorded at 1132 m/s. If he weighs 70.3 kg, how much kinetic energy did the Flash have during this record-breaking run?
2 points
2
Question 11
11.
Jin goes fishing and reels in a 12 kg fish with 174.96 J of work. How fast was he reeling in the fish?
2 points
2
Question 12
12.
Riley sits in a wagon that is being pulled by her imaginary friend with 50 N of force over 10 m. What is Riley's work?
2 points
2
Question 13
13.
Riley sits in a wagon that is being pulled by her imaginary friend with 50 N of force over 10 m. What is her imaginary friend's work?
2 points
2
Question 14
14.
Jenny (50 kg) runs up the bleachers and makes it to the top in 45 seconds. Forrest (65 kg) runs across the bleachers, up to the top and back across in 45 seconds. Who does the most work?
2 points
2
Question 15
15.
Jenny (50 kg) runs up the bleachers and makes it to the top in 45 seconds. Forrest (65 kg) runs across the bleachers, up to the top and back across in 45 seconds. Who has the most power?
2 points
2
Question 16
16.
Jenny (50 kg) runs up the bleachers and makes it to the top in 45 seconds. Forrest (65 kg) sprains his ankle and can only go up the bleachers to the top in 45 seconds. Who does the most work?
2 points
2
Question 17
17.
Jenny (50 kg) runs up the bleachers and makes it to the top in 45 seconds. Forrest (65 kg) sprains his ankle and can only go up the bleachers to the top in 45 seconds. Who has the most power?
