Alan slides across home plate during a baseball game. if he has a mass of 61
kg, and the coefficient of kinetic friction between him and the ground is 0.62,
what is the force of friction acting on him?
o a 410n
o b, 591 n
o c. 490 n
od 371 n

What do you think car designers do if the damage caused by a crash test is too severe?

A100 kg running back runs at 5m/s into a stationary linebacker. it takes 0.5 for the running back to be completely stopped

It may seem strange that the selected velocity does not depend on either the mass or the charge of the particle. (for example, would the velocity of a neutral particle be selected by passage through this device? ) the explanation of this is that the mass and the charge control the resolution of the device--particles with the wrong velocity will be accelerated away from the straight line and will not pass through the exit slit. if the acceleration depends strongly on the velocity, then particles with just slightly wrong velocities will feel a substantial transverse acceleration and will not exit the selector. because the acc