There are two forces on the 1.11 kg box in the overhead view of the figure but only one is shown. For F1 = 11.1 N, a = 14.0 m/s2, and θ = 31.7°, find the second force (a) in unit-vector notation and as (b) a magnitude and (c) a direction. (State the direction as a negative angle measured from the +x direction.)

Who was the first scientist to measure speed as distance over time?

One form of energy can be another type of energy. a. created to form b. transformed into c. destroyed and then created to form

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.)