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A block slides down a ramp from rest. The block travels 7.19 m/s at the bottom of the ramp and has a mass of 2.98 kg. Assuming no friction, what is the height of the block off the ground at the top of the ramp?
What is the kinetic energy of a thrown 13.2 N stick moving at 3.89 m/s?
calculate the weight of horizontal force P required to start wedge in motion and raise the block. The coefficient of friction for all contact surfaces is 0.2
Car A and car B are travelling down a straight road.Car A is travelling at 15m/s and accelerating at 2m/s2.Car B starts from speed 0 but accelerates at 4m/s2.After how many seconds car A and B will be travelling at the same speed?
a loaded tube is 1.5kg placed in liquid of 9.5g/dm³ was made to oscillate vertically when slightly pushed down, if the time for 50 oscillation is 35 sec determine. a) periodic frequency b) angular velocity
An automobile accelerates uniformly from rest and reaches a velocity of 22 m/s in 9 s. The tire diameter is 58 cm. Determine the number of revolutions the tire makes during this motion and the final angular velocity of the tire in revolutions per second.
A 1-kg ball moving at a velocity of 12 m/s collides head-on with a 2-kg ball moving at 24 m/s in the opposite direction. Calculate the velocity of each ball after collision if (a) e = 2/3, (b) the balls stick together, and (c) the collision is perfectly elastic.
A fire hose ejects water at the rate of 60 kg of water per second at a velocity of 40 m/s. With what force must a fireman hold on the hose to keep it stationary
A projectile has a momentum of 1.6 x 104 kg-m/s and a velocity of 200 m/s. What is its mass and its weight?
used to raise an object of mass 30 kg. If the plane is
inclined 5° above the horizontal and the coefficient of friction is 0.20, calculate the ideal
mechanical advantage, actual mechanical advantage, and the efficiency of this machine.
