In shot put, the shot is put (thrown) from above the athlete's shoulder level. Is the launch angle that produces the greatest range 45°, less than 45°, or greater than 45°?

8. During the last few kilometers of a marathon, runners play mental games to test each other out. They accelerate to see if the other runners will accelerate also. If a runner has a velocity of 5 m/s and accelerates to 5.

The acceleration of a motorcycle is given by a x (t) = At - Bt2, where A = 1.50 m/s3 and B = 0.120 m/s4. The motorcycle is at rest at the origin at time t = 0. (a) Find its position and velocity as functions of time.

A simple pendulum consists of a small object with mass m = 1.91 kg and a massless string with length l = 1 m. Halfway down the string from the hanging spot, there is a peg which causes the string to bend. Find the period of this pendulum, in second.

A student waiting at a stoplight notices that her turn signal, which has a period of 0.80 s, makes one blink exactly in sync with the turn signal of the car in front of her.

Which of the following is true when categorizing a hurricane? A) Storm category increases as wind increases and pressure decreases. B) Storm category increases as wind decreases and pressure increases.

Why do two hydrogen atoms bond to form a hydrogen molecule

Suppose the gravitational force between two spheres is 100 N. If the distance between the spheres is halved, what is the new gravitational force between them?

Ilya and Anya each can run at a speed of 8.00 mph and walk at a speed of 3.20 mph. They set off together on a route of length 5.00 miles.

Jill is getting ready to push little Frank in his swing. She pulls Frank back as high as she can and then releases the swing. What is the initial transfer of energy that accelerates the swing when she lets go?

Which phenomenon generates electric current? A black body radiation B ultraviolet catastrophe C emission spectra D photoelectric effect