David's new motorcycle can accelerate at 5 m/s2. The combined mass of David and his motorcycle is 225.0 kg. What is the size of the net (unbalanced) force that can cause
the acceleration?
020 N
0 200 N
0 980 N
1125 N
0 1350 N
Question 20

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

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?

The number of passengers who arrive at the platform of a subway station for the 10 am train is a random variable with a mean of 120 and a variance of 16. find the lower bound of the probability that there will be between 100 and 140 passengers (round off to second decimal place).