When someone on Earth observes the Moon in the first-quarter phase, someone on the Moon facing Earth observes Earth in the: (hint: draw a picture!)
a. new Earth phase.
b. first-quarter Earth phase
c. crescent Earth phase
d. third quarter Earth phase
e. full Earth phase

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.)

Aball of mass 0.3kg is released from rest at a height of 8m.how fast is it going when it hits the ground? accleration due to gravity is g=9.8m/s

At what time would the magnitude of the velocity reach 36.00 km/hr