A person lifts an 11.5 kg box a vertical distance of 1.25 m and then carries does box a horizontal distance of 8.70 m. How much work is done by the person during this process?

Determine the amount of work done when a crane lifts a 100-n block form 2m above the ground to 6m above the ground

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k