Author Question: A cannon of mass 1500 kg fires a 10-kg shell with a velocity of 200 m/s at an angle of 30 above the ... (Read 462 times)

Wadzanai · **on:** Jul 28, 2018

A cannon of mass 1500 kg fires a 10-kg shell with a velocity of 200 m/s at an angle of 30 above the horizontal. Find the recoil velocity of the cannon across the level ground.
a. 1.15 m/s
c. 2.41 m/s
b. 0.94 m/s
d. 1.94 m/s

Question 2

An electron (charge -1.6 10-19 C) moves on a path perpendicular to the direction of a uniform electric field of strength 3.0 N/C. How much work is done on the electron as it moves 20 cm?
a. 1.6 10-20 J
c. 4.8 10-20 J
b. -4.8 10-20 J
d. zero