Author Question: A steady horizontal force lasting for 2.1 s causes a 1.25 kg object to accelerate at 3.2 m/s2 on a ... (Read 49 times)

a0266361136 · **on:** Jul 29, 2018

A steady horizontal force lasting for 2.1 s causes a 1.25 kg object to accelerate at 3.2 m/s2 on a frictionless table. What impulse does this force exert on the object?

A) 26 kg m/s
B) 11 kg m/s
C) 8.4 kg m/s
D) 2.6 kg m/s

Question 2

The force of air impact upon the sail of a boat is greater if the air

A) bounces upon impact.
B) encounters the sail head-on.
C) encounters the sail at a grazing angle.