Mechanics | Relativity Answers

A watermelon cannon fires a watermelon vertically up into the air at a velocity of +12.0 m/s, starting from an initial position 1.20 meters above the ground. When the watermelon reaches the peak of its flight, what is (a) its velocity, (b) its acceleration, (c) the elapsed time, and (d) its height above the ground?

a cracker of mass 100 g explodes into 2 equal mass . show that these 2 pieces of cracker flies inopposite direction

You are riding your bike in a straight line with a speed of . You accidentally drop your calculator out of your backpack from a height of above the ground. When it hits the ground, where is the calculator in relation to the position of your backpack?

A jet plane lands with a speed of 100m/s and can accelerate uniformly at a maximum rate of -0.5 m/s2 as it comes to a rest. Can this plane land at an airport where the airport runway is 800 m long. ( hint find the distance it will take to come to rest and compare that to the length of the runway)

a person walks 45m East and then walks 33m at an angle 22 degrees North of East. What is the magnitude of the total displacement?

A boat moves through the water with two forces acting on it. One is a 2423 N forward push by the motor on the propeller, and the other is an 2191 N resistive force due to the water around the bow. What is the acceleration of the 1238 boat. Answer in units of m/s2

A golf ball rolls up a hill towards a miniature golf hole. Assign the direction toward the hole as being positive a. If the ball starts with a speed of 2.0 m/s and slows at a constant rate of 0.50 m/s squared. What is its velocity after 2.0 seconds?

starting from rest, a car accelerates at 2 m/s^2 up a hill that is inclined 5.5 dagrees above the horizontal. How far a) horizontally and b) vertically has the car traveled in 12 s.

The bearing of a closed compass traverse is given as AB - 32. If the magnetic declination at the place is 3 30', determine the true bearing of the line.

a 110kg object is supported by two ropes attached to the ceiling. what is the tension in the right hand rope?