8. A laser beam from Earth is reflected back from a mirror on the Moon in 2.60 s. If the distance between Earth and the Moon is 3.85 * 10 ^ 8 * m, calculate the speed of light. Please show all work. (ref: p.438-446)

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block

An object dropped from cliff falls with a constant acceleration of 10 metre per second square find its speed of two seconds after it was dropped