A roller coaster car starts from rest then accelerates downhill at a constant 6 m/s2 for 6 s. The car then goes uphill with a constant acceleration of -2 m/s2. What is the car's velocity 4 s after it starts going uphill?

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

Standing side by side ,you and a friend step off a bridge at different times and fall for 1.6s to the water below.your friend goes first,and you follow after he has dropped a distance of 2.0m.when your friend hits the water,is the seperation between the two of you 2.0m or more than 2.0m? verify your answer with a calculation.

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters