21. A dog running at 4 sees a ball and accelerates steadily to catch it. The dog accelerates at a rate of 0.41 and catches the ball after 2.3s. What was the dog's total displacement when it caught the ball?
"Round your answer to the nearest thousandth.

How would a small bar magnet be oriented when placed at position x?

Aplayground slide is 8.80 ft long and makes an angle of 25.0° with the horizontal. a 63.0-kg child, initially at the top, slides all the way down to the bottom of the slide. (a) choosing the bottom of the slide as the reference configuration, what is the system's potential energy when the child is at the top and at the bottom of the slide? what is the change in potential energy as the child slides from the top to the bottom of the slide? (include the sign of the value in your answer.)

Am i correct on these two physics questions?