A tennis ball is hit, giving it a horizontal velocity of 81 m/s [E]. Air resistance causes a constant acceleration of 4 m/s2 [W]. Determine its velocity after 3.3 s.

Acrow drops a 0.11kg clam onto a rocky beach from a height of 9.8m. what is the kinetic energy of the clam when it is 5.0m above the ground? what is its speed at that point?

12. ritu obtained a distinct image of a distant tree on the screen with the of a concave mirror.to find the focal length of the mirror she has to measure the distance between: (a) mirror and the tree. (b) screen and the tree.(c) mirror and the screen. (d) mirror and tree as well as between screen and the tree.

What is the difference between a solar cell and a solar panels