If Ron and Ginny are pushing pumpkin with a force of 20 N east each, and the pumpkin is resisting with a force of 40 N west with friction, what is the net force acting pumpkin?

A. 40 N east
B. 80 N east
C. 0 N
D. 20 N east

Determine the age of a fossil if it had only one eighth of its original carbon-14 content remaining?

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?

Asmall 12.00g plastic ball is suspended by a string in a uniform, horizontal electric field with a magnitude of 10^3 n/c. if the ball is in equilibrium when the string makes a 30 ° angle with the vertical, what is the net charge on the ball?