Starting at time t = 0, net force F1 is applied to an object that is initially at rest. (a) If the force remains constant with magnitude F1 while the object moves a distance d, the final speed of the object is v1. What is the final speed v2 (in terms of v1) if the net force is F2 = 2F1 and the object moves the same distance d while the force is being applied? (b) If the force F1 remains constant while it is applied for a time T, the final speed of the object is v1. What is the final speed v2 (in terms of v1) if the applied force is F2 = 2F1 and is constant while it is applied for the same time T? In a later chapter we’ll call force times distance work and force times time impulse and associate work and impulse with the change in speed.)
Starting at time t = 0, net force F1 is applied to an object
that is initially at rest. (a) If the force remains constant with magnitude
F1 while the object moves a distance d, the final speed of the object is v1.
What is the final speed v2 (in terms of v1) if the net force is F2 = 2F1
and the object moves the same distance d while the force is being applied?
(b) If the force F1 remains constant while it is applied for a time
T, the final speed of the object is v1. What is the final speed v2 (in terms
of v1) if the applied force is F2 = 2F1 and is constant while it is applied
for the same time T? In a later chapter we’ll call force times distance
work and force times time impulse and associate work and impulse with
the change in speed.)
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