Use Newton's Second Law of motion to solve each problem.(with proper units!)

1. How much force is needed to accelerate a 66 kg skier at 2 m/s²?
2. What is the force on a 1000 kg elevator that is falling freely at 9.8 m/s²?
3. What is the acceleration of a 50 kg object pushed with a force of 500 newtons?
4. The mass of the large car is 1000 kg. How much force would be required to accelerate the car at the rate of 3 m/s²?
5. A 50 kg skater pushed by a friend accelerates 5 m/s². How much force did the friend apply?
​