2. April Moon set a record in flight shooting (a variety of long-distance
archery). In 1981 in Utah, she sent an arrow a horizontal distance of
9.50 x 10-m. What was the speed of the arrow at the top of the flight if the
arrow was launched at an angle of 45.0° with respect to the horizontal?

5g of ammonium nitrate was dissolved in 60g of water in an insulated container. the temperature at the start of the reaction was 23.0°c and at the end it was 19.0°c. calculate the energy absorbed by the reaction.

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates

Aball is thrown vertically upwards from the top of a tower with a speed of 100m/s.it strikes the pound near the base of the tower after 25sec . the height of the tower is