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The position of a particle moving along x axis is given by x=6.0t2-1.0t2 where x is in meter and t is in seconds. What is the position of the particle when it achieves its maximum speed is the positive x direction?
If two electrons are each 1.50 × 10-10 m from a proton, find the magnitude and direction of the net electric force they will exert on the proton
In celebration of winning the Super Bowl Tom Brady 102 kg throws a football 0.4 kg straight up in the air. As the ball falls toward the ground there is a perpendicular cross wind coming from the right with a force of 25 N and a vertical air resistance force of 2N draw a free body diagram find the magnitude and direction of the resultant force acting on the football
A fruit from a tree of mass 2kg it 5m above the ground. Calculate 1, potential energy 2,kinetic energy 3, work done and acceleration before you look for acceleration find force
A crane leaves a load of 500kg very slow throw a vertical distance of 75cm. Calculate the work done against gravity of g=10ms
A rail road of length 20m is heated through 30°c to 100°c. calculate the gap between the rails
The displacement vectors A and B, when added together, give the resultant vector R, so that R = A + B. Use the data in the drawing and the fact that φ = 31° to find the magnitude R of the resultant vector and the angle θ that it makes with the +x axis.
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A rock falls from rest a vertical distance of 1.32 meter to the surface of a planet in 0.63 second. The magnitude of the acceleration due to gravity on the planet is approximately
A cannonball is fired horizontally at 23.40 m/s from the edge of a 55 m building. Determine the: (a) height of the cannonball from the ground after 2 s. (b) time taken by the cannonball to reach the ground. (c) distance from the base of the building to the point where the its landed.
shows a piece of block is 15 cm long, 7 cm wide and 3 cm thick is floating with one-third of its volume above the water level. Calculate the buoyant force exerted on the block.
