Some rubber bands pulling on an object cause it to accelerate. If 4 rubber bands cause it to accelerate at 1.80 m/s2, how many rubber bands will be required to accelerate an object with one half the mass at 3.60 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?

A 2100 kg truck has put its front bumper against the rear bumper of a 2400 kg SUV to give it a push. With the engine at full power and good tires on good pavement, the maximum forward force on the truck is 18,000 N. What is the maximum possible acceleration the truck can give the SUV? At this acceleration, what is the force of the SUV's bumper on the truck's bumper?

In a fit, a toddler throws straight down his favorite 1.5 kg toy with an initial velocity of 2 m/s. What is the magnitude of the change in velocity of the toy from t = 0.14 seconds to t = 0.31 seconds?

Your mass is 94.2 kg, and the sled s mass is 16.1 kg. The sled is moving by itself on the ice at 5.05 m/s. You parachute vertically down onto the sled, and land gently. What is the sled s velocity with you now on it? 0.85 m/s 0.74 m/s 0.44 m/s 0.96 m/s

Mass #1 = 60g Mass #2 = 140g Acceleration #1 = 3.6169 Acceleration #2 = 3.712 Acceleration #3 = 3.675   Theoretical Acceleration  Net Force (theoretical)

A certain aircraft has a mass of 300,000 kg. At a certain instant during its landing, its speed is 27.0 m/s. If the braking force is a constant 445,000 N, what is the speed of the airplane 10.0 s later?

A horizontal force of 5.0 N pushes a 0.50-kg block against a vertical wall. The block is initially at rest. If µ. – 0.60 and 0.50, the acceleration of the block is: Ⓒ4.8 m/s² Ⓒ3.8 m/s² Ⓒ 9.8 m/s² 0.0 m/s² 08.0 m/s2

The froghopper holds the title of the best jumper of the animal world. A 0.0198-gram (1.98 X 10-5 kg) froghopper can accelerate from 0m/s to 4m/s in only one one thousandth of a second (0.001 s) as it jumps. What is the force delivered to the froghopper as it makes this jump?

A truck collides with a car, and during the collision, the net force on each vehicle is essentially the force exerted by the other. Suppose the mass of the car is 850 kg, the mass of the truck is 2,750 kg, and the magnitude of the truck's acceleration is 14 m/s2. Find the magnitude of the car's acceleration (in m/s2).