Math Toolb
Using Newton's Second Law
Use the equations for Newton's second law to understand how
mass and force affect the motion of a volleyball.
Evaluate Expressions Show your calculations for each problem.
a. A volleyball is hit and experiences a net force of 2 N, which
causes it to accelerate at 8 m/s2. What is the mass of the
volleyball?
m = 2n
8m/s² = 0.25 kg
b. The same ball is hit again and experiences a
net force of 3.5 N instead. What is the
acceleration of the volleyball?
c. The same ball rolls horizontally along the sand
and decelerates at a rate of 6 m/s2. Calculate
www.n
the force of friction that caused this deceleration.