A uniform plank has mass M = 9 kg and length L = 4.0 m. A box of mass m = 2.2 kg rests on it at a distance Xg = 2.7 m from the left end of the plank. The plank is supported by two supports at distances X1 = 0.8 m %3D %3D and X2 = 3.7 m from the left end of the plank. %3D

help solve two part question  A. A roller coaster begins at rest at the top of a 30 m hill. Find the velocity at a point 5 m above the bottom of the hill. B. A roller coaster begins at 6 m/s at the top of a 39 m hill. Find the velocity at a point 4 m above the bottom of the hill.

You want the final speed at the bottom of your roller coaster hill to be 25 m/s. What is the height (h) of the hill to achieve this?  Use g = 9.8 m/s2

A commercial airplane is coming in for a landing. Just before it hits the runway it is moving at 76 m/s. The plane has a mass of 20,000 kg. The runway is 1.6km long and, obviously, the airplane needs to be stopped before it reaches the end of the runway. How large is the braking force the airplane needs to stop safely before the end of the runway?

How much force is needed to accelerate a 2 kg physics book to an acceleration of 6 m/s/s? O 0.33 N O 3 N O 12 N 36 N O ON

Q4. A stone was dropped from a cliff of height 100 m. Ignoring air resistance, how long will it take the stone to reach ground? juaiļ, o ú 49 49 =4 t -4.9t Q5. A stone was dropped from a cliff of height 100 m. Ignoring air resistance, what will be the final speed of the stone when it reaches ground? Q6. An object has an initial velocity of 8 m/s and acceleration of 2 m/s?, how far the object will move in 10 seconds?

A student drops a water balloon out of a dorm window 13 m above the ground. What is its speed when it hits the ground? m/s

A space worker exerts a force of 256 N on a spaceship and it accelerates at 8 m/s/s. What is the ship's mass?

I need the answer as soon as possible

A penny is dropped from the top of a high cliff. After 3 seconds, how fast is the penny traveling? Assume no air resistance