While taking a walk a bear travels 2.5 km [S] for 1 hour, then 4.6 km [N] for 3.5 hours then 0.4km [S] for 30 minutes. Then the bear lays down to take a nap.
a) What is the bear’s displacement in kilometers?
b) What is bear’s distance traveled for the trip?

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?

Which best represents the law of conservation of mass ?

Ahuge (essentially infinite) horizontal nonconducting sheet 10.0 cm thick has charge uniformly spread over both faces. the upper face carries +95.0 nc/m2 while the lower face carries -25.0 nc/ m2. what is the magnitude of the electric field at a point within the sheet 2.00 cm below the upper face? (ε0 = 8.85 × 10-12 c2/n · m2)