This is related to question 2 (with the new version in which 2b has a starting speed of 3 m/s). A force accelerates a cart from 0 to 5 m/s while it travels 15 meters. Would the same force cause it to accelerate from 5 to 10 m/s while it travels from 15 to 30 meters? (In other words, will the the speed increase by 5 m/s every 15 meters?) Your answer: Yes, the speed will increase by the same amount every 15 meters. O No, the speed will not increase by the same amount every 15 meters. The change will only be constant if the object is in free fall.

Two cars have the same mass of 1,029 kg. One of the cars is moving 30 times as fast as the other is. How much more work (the factor without decimal place!) will be needed to stop the faster car

A carpenter swings a 5.1-kg hammer so that its speed is 8.7 m/s just before it strikes a nail. Assuming that a constant force of 2,220.1 N resisted the motion of the nail, what is the distance (in millimeters) that the nail travels into the wood before it stops?

A boy uses a string to swing a 3 kg stone around his head. If the string is 1.9 m, and can bear a maximum tension of 1,084 N, what is the maximum speed at which the boy can swing the stone without breaking the string?