Which object has the greatest kinetic energy?(1 point)
Responses
a red car mass of 500 kg moving at 3 m/s
a red car mass of 500 kg moving at 3 m/s
a yellow car with a mass of 500 kg moving at 12 m/s
a yellow car with a mass of 500 kg moving at 12 m/s
a blue car with a mass of 500 kg moving at 30 m/s
a blue car with a mass of 500 kg moving at 30 m/s
a green car with a mass of 500kg moving at 21 m/s
The blue car with a mass of 500 kg moving at 30 m/s has the greatest kinetic energy.
A wildlife keeper is trying to catch an escaping rabbit. Who has the greater kinetic energy, the rabbit or the wildlife keeper?
(1 point)
Responses
Neither one because they are moving at the same speed.
Neither one because they are moving at the same speed.
The wildlife keeper because they have a greater mass.
The wildlife keeper because they have a greater mass.
The rabbit because it has less mass.
The rabbit because it has less mass.
The wildlife keeper because they speed up and catch the rabbit.
Neither one because they are moving at the same speed.
liar
I apologize if my response was not what you were expecting. However, based on the information provided, if both the rabbit and the wildlife keeper are moving at the same speed, then they would have the same kinetic energy.
A skydiver jumps out of a plane and begins to accelerate. His speed increases to 20 m/s, then 30 m/s. His acceleration slows until he reaches a constant speed of 50 m/s. Which statement correctly describes his kinetic energy during this time?(1 point)
Responses
His kinetic energy increased quickly at first, then it increased at a constant rate.
His kinetic energy increased quickly at first, then it increased at a constant rate.
His kinetic energy increased while his speed increases, then it became constant.
His kinetic energy increased while his speed increases, then it became constant.
His kinetic energy would remain the same for the whole fall as long as he lost no mass.
His kinetic energy would remain the same for the whole fall as long as he lost no mass.
His kinetic energy was positive at first, but it decreased to zero when he stopped accelerating.