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Q1. A 9300 kg boxcar travelling at 23 m/s strikes a second boxcar at rest. The two stick together and move off with a speed of 15 m/s. What is the mass of the second car?
Q2. A bullet is fired horizontally with an initial velocity of 743 m/s at a target located 165 m from the rifle.
How much time is required for the bullet to reach the target?
Two parallel metal rods form a plane inclined at 20.0° to the horizontal. The upper end of the rods are connected together by a resistor of 122.0 ?. What is the maximum speed of the bar
A 25.0g arrow is shot through a 7.8 cm apple. If the arrow enters the apple at 38.8 m/s and emerges with a speed of 30.10m/s in the same direction, what is the magnitude of force with which the apple has resisted the arrow.
An object has a kinetic energy of 237 J and a momentum of magnitude 29.3 kg·m/s. Find the speed and the mass of the object
A rotating wheel requires a time t = 4.32s to rotate 37.0 revolutions. What is the constant angular acceleration (rad/s2 of the wheel
a block of mass m1=8 rests on a frictionless surface and is attached to a light cord that is wrapped around a solid cylinder of mass m2, radius r=.130 m and moment of inertia I=1/2m2R^2.
A reflecting telescope has a main mirror with fM = 620 mm. If an eyepiece with a magnification of 15 is used, what is the total magnification of the telescope
A perfectly inelastic collision (both cars stick together after the collision) occurs between a 2000kg car moving at 7m/s, What is the velocity of the cars immediately after impact
For this experiment you will require a stand, string, a paper or plastic cup, a nail, a roll of paper towels or similar sized paper, coloured sand, or some other dry powdery product, and a ruler or measuring tape.
A boy is attempting to swim directly across a river; he is able to swim at a speed of 0.421 m/s relative to the water. The river is 2.48 m wide and the boy ends up at 4.77 m downstream from his starting point.
Must show all work and calculations!!!! A primitive yo-yo is made by wrapping a string several times around a solid cylinder with m=200g and r=10cm. Find the tension in the string and the acceleration of the cylinder
A shop sign weighing 245-N is supported by a uniform 155-N bean. Find out the tension in the guy wire, and the horizontal and vertical forces exerted by the hinge on the bean.
A soccer ball is kicked with an initial horizontal velocity of 18 m/s and an initial vertical velocity of 13 m/s, What is the speed of the ball 0.8 seconds after it was kicked, What is the maximum height the ball goes above the ground
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