For an investigation, a student measures the speed of a cart as it rolls down a ramp. The student then records data in the table shown above. Which of these best explains the student’s data? A. The speed of the cart decreases as the cart rolls down the ramp because of friction between the cart and the ramp.
B. The speed of the cart increases as the cart rolls down the ramp because the force acting on the cart is greater than the force of gravity.
C. The speed of the cart increases as the cart rolls down the ramp because the forces acting on the cart are unbalanced.
D. The speed of the cart decreases as the cart rolls down the ramp because the forces acting on the cart are balanced.

Acar of mass m goes around a banked curve of radius r with speed v. if the road is frictionless due to ice, the car can still negotiate the curve if the horizontal component of the normal force on the car from the road is equal in magnitude to 101) a) mv2/r b) mg/2. d) mg e) tan[v2/(eg)]

During spring semester at mit, residents of the parallel buildings of the east campus dorms battle one another with large catapults that are made with surgical hose mounted on a window frame. a balloon filled with dyed water is placed in a pouch attached to the hose, which is then stretched through the width of the room. assume that the stretching of the hose obeys hooke's law with a spring constant of 89.0 n/m. if the hose is stretched by 5.80 m and then released, how much work does the force from the hose do on the balloon in the pouch by the time the hose reaches its relaxed length? unitst 3 number-1497 the tolerance is +/-5% open show work click if you would like to show work for this question:

Awalk up the phase change graph worksheet