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Total questions: 15
Worksheet time: 11mins
Rank the following from most to least momentum?
a cheetah with a mass of 67 kilograms running at a speed of 14 m/s
a bighorn sheep with a mass of 136 kilograms running at a speed of 4 m/s
a chimpanzee running at a speed of 25 km/hr that has a mass of 54 kilograms
Cheetah
Bighorn sheep
Chimpanzee
When there is a change in motion?
When forces are balanced
When the forces are unbalanced
Whe forces are equal
Never
The momentum of an object depends upon the object's ___________&_____________.
size and shape
mass and speed
mass and veloctiy
mass and energy
What is an elastic collision?
An elastic collision is an encounter between two bodies in which the total energy of the two bodies is different.
An elastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.
An inelastic collision is an encounter between two bodies in which the total kinetic energy of the two bodies remains the same.
What is an inelastic collision?
When two objects collide, becoming stuck together and kinetic energy is tronsformed into other forms
When two objects collide, becoming stuck together and momentum is conserved
When two objects don't collide, becoming stuck together and total energy is lost
2 balls collide and bounce off of each other. During the collision total momentum remained constant and total kinetic energy remained constant. What type of collision is this?
Inelastic Collision
Elastic Collision
Perfectly Inelastic Collision
No collision occurred
A BMW rear ends a car at the stop light. Neither car sticks together. The momentum was conserved in the collision but the kinetic energy was not conserved. What type of collision is this?
Elastic Collision
Inelastic Collision
Perfectly inelastic Collision
No Collision
If a collision is elastic which of the following must be true?
Momentum is not conserved
The objects are in an open system
The total momentum is equal to 0
Kinetic Energy is conserved
At which point is potential energy greatest?
W
X
Y
Z
A 50 kg jogger jumps 1.6 m off the ground. How much energy did they use to do this?
80 J
500 J
160 J
800 J
On the moon, g = 1.6 m/s^2. A basketball has a mass of 0.6 g and the basketball hoop is usually 3 m above the ground. Assuming you want to use the SAME AMOUNT OF ENERGY AS ON EARTH, at what height would you have to put the hoop on the moon?
About 19 m.
About 3 m
About 5 m
About 2 m
