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A box with a mass of 1.0 kg is moving to the right. Its initialspeed is 2 m/s. After traveling 3 m, its speed is 4 m/s. Inadditional to the usual forces (gravity, normal, friction) thereare two other forces acting on the box. One is a 5 N force that hasan upward vertical component of 4 N and a component to the left of3 N. The other force is 8 N to the right.(a) What is the normal force?(b) What is the coefficient of kinetic friction?
You're driving down the highway late one night at 20 m/s while a deer steps onto the road 44m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 11m/s^2 .How much distance is be..
Estimate the volume of your body. (Consider your body to be a cylinder having a radius of about 6 inches (or 0.15 m) and a height of about 1.5 meters
A two-stage rocket moves in space at a constant velocity of +4940 m/s. The two stages are then separated by a small explosive charge placed between them. Immediately after the explosion the velocity of the 1000-kg upper stage is +5930 m/s.
Two bumper cars are driving directly toward one another. The first car, mass m1 = 150 kg, What is the total momentum of the system
You have a cylindrical cup of water that springs a leak 5 cm below the surface of the water. What is the velocity of the water coming out of the hole
A daredevil on a motorcycle leaves the end of a ramp with a speed of 39.5 m/s, what is the maximum height that he reaches
A massless spring with spring constant 9.60 N/m hangs vertically. A body of mass 2.70 kg is attached to its free end and then released. Calculate the amplitude of the motion and frequency
A 16 cm-diameter compressed-air tank is 70cm tall. The pressure at 30 degrees C is 130 atm. What is the number of moles in the tank
A wheel has a radius of 3.6m. How far (path length) does a point on the circumference travel if the wheel is rotated by angles of 30°, 30 rad, and 30 rev, respectively.
two positive point charges are held in place 0.60 m apart. they are then moved so that their electric potential energy
A mortar crew is positioned near the top of a steep hill. Enemy forces are charging up the hill and it is necessary for the crew to spring into action. find How long will the mortar shell remain in the air
calculate the escape velocity from venuss exosphere which begins about 200 kilometers above the surface.hint youll need
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