The forklift exerts a 1,500.0 n force on the box and moves it 3.00 m forward to the stack. how much work does the forklift do against the force of gravity?

a) 1.50 × 10^3 j

b) 0.00 j

c) 500 j

d) 4.50 × 10^3 j

i think it is d, but i can also justify b, !

•• al and bert are jogging side-by-side on a trail in the woods at a speed of 0.75 m/s. suddenly al sees the end of the trail 35 m ahead and decides to speed up to reach it. he accelerates at a constant rate of 0.50 m/s2, while bert continues on at a constant speed. (a) how long does it take al to reach the end of the trail? (b) once he reaches the end of the trail, he immediately turns around and heads back along the trail with a constant speed of 0.85 m/s. how long does it take him to meet up with bert? (c) how far are they from the end of the trail when they meet?

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?

Elements that have one valence electron and are very reactive are called