Author Question: A force of 130 N is applied to a 50-kg mass in the direction of motion for a distance of 6.0 m and ... (Read 75 times)

jace · **on:** Jul 28, 2018

A force of 130 N is applied to a 50-kg mass in the direction of motion for a distance of 6.0 m and then the force is increased to 170 N for the next 4.0 m. For the 10 m of travel, how much work is done by the varying force?
a. 1.5E+3 J
b. 1.5E+3 J
c. 7.3E+4 J
d. 2.9E+2 J
e. 1.4E+3 J

Question 2

A baseball catcher puts on an exhibition by catching a 0.200-kg ball dropped from a helicopter at a height of 150 m above the catcher. If the catcher gives with the ball for a distance of 0.755 m while catching it, what average force is exerted on the mitt by the ball? (g = 9.80 m/s2)
a. 39.7 N
b. 294 N
c. 389 N
d. 399 N
e. 1110 N