PLEASE HELP WITH THOSE TWO QUESTIONS. 1) A 855 kg car pushes on the road with 5450 N of force. What is the magnitude of the force the road exerts back on the car, and what is the acceleration of the car?

2) A 68.0 kg baseball player throws a 145 g baseball directly east. He throws the baseball with a force of 4.40 N. What is the resulting acceleration of the player?

The force will determine the acceleration.

Idon’t quite understand this problem

1.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the mass defect of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 2.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev 3.)the isotope cobalt-60 has a nuclear mass of 59.933820 u calculate the binding energy per nucleon of cobalt-60 using the following information. mass of proton: 1.007825 u mass of neutron: 1.008665 u 1 u = 931.5 mev