The sled is pulled up a steeperhill of the sameheightas the hill described above.

how will the velocity of the sled at the bottom of the hill (after it has slid down) compare to that of the sled at the bottom of the original hill?

choose the best answer below.

a. the speed at the bottom is greater for the steeper hill.

b. the speed at the bottom is the same for both hills.

c. the speed at the bottom is greater for the original hill because the sled travels further.

d. there is not enough information given to say which speed at the bottom is faster.

e. none of these descriptions is correct.

Adiver in midair has an angular velocity of 6.0 rad/s and a moment of inertia of 1.2 kg·m2. he then pulls is arms and legs into a tuck position and his angular velocity increases to 12 rad/s. the net external torque acting on the diver is zero. what is his moment of inertia in the tuck position?

What are similarities and differences between refraction, reflection, diffraction and absorption?

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.