1. What is the force of attraction (gravitational) between a 60 kg girl (m1 -60 kg) and 70 kg boy (m2 = 70 kg), whose centers are 1.0 m apart (r =1.0 m)? hint:
Apply Newton's Law of Universal Gravitation

In which of the following cases is work being done on an object? question 2 options: pulling a trailer up a hill carrying a box down a corridor suspending a heavy weight with a strong chain pushing against a locked door

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

When you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff-legged landing. in this way the average force your body experiences is a) less than 1/10 as great. b) more than 1/10 as great. c) about 1/10 as great.d) about 10 times as great.