I NEED HELP WITH MY PHYSIC HW S HELP PLEASE ASAP 1. A 1206 kg car accelerates at a rate of 1.7 m/s/s over a distance of 62 meters. How much work was done by the engine of the car?

2. How much work is required to lift a 2.3-Newton’s weigh from 8.6 meters to 36.3 meters above the surface of earth?

3. A 7.3 kg mass falls from rest and increase its speed to 3.2 m/s. How much work was done on the mass by gravity?

PLEASE HELP Thank you!

Acyclotron is used to produce a beam of high-energy deuterons that then collide with a target to produce radioactive isotopes for a medical procedure. deuterons are nuclei of deuterium, an isotope of hydrogen, consisting of one neutron and one proton, with total mass 3.34×10−27kg. the deuterons exit the cyclotron with a kinetic energy of 6.40 mev .a-what is the speed of the deuterons when they exit? b-if the magnetic field inside the cyclotron is 1.25 t, what is the diameter of the deuterons' largest orbit, just before they exit? c-if the beam current is 350 μa how many deuterons strike the target each second?