Overview
Q1,
A 77 kilogram runner is moving to the left at a speed of 2.0 meter/second. 10 seconds later they are running to the right at a speed of 3.4 meter/second. What was the magnitude of the net average force in units of Newtons acting on the runner over this time?
If the net force acting on an object points toward the right, then the vector describing the change of momentum of the object...
Group of answer choices
must point toward the right
must be zero
must point perpendicular to the net force
can point in any direction (direction does not depend of net force)
must point toward the left
Q2,
What is the closest estimate for the magnitude of impulse acting on a bicyclist who goes from 8 miles/hour to 30 miles/hour along a straight road?
Group of answer choices
1,000 kg m/s
1,000,000 kg m/s
100,000 kg m/s
100 kg m/s
10,000 kg m/s