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Q1. A 3000-kg blue truck travelling east collides and sticks to a 4000-kg orange truck travelling with a speed of 7.3 m/s to the west (define easterly direction to be the positive direction). Immediately after the trucks collide they move as one object with a velocity of -1.2 m/s. What was the blue truck's velocity before collision?
Q2. A kayaker needs to paddle north across a 200 wide harbor. The tide is going out, creating a tidal current that flows east at 2.0. The kayaker can paddle with a speed of 3.0. In which direction must he paddle in order to travel straight across the harbor.
Two projectiles are thrown with the same initial speed, one at an angle with respect to the level ground and the other at angle 90 degree. Both projectiles strike the ground at the equivalent distance from the projection point. Are both projectiles i..
The wind blows with a force of 425N north on a sail boat, while the water exerts a force of 325N west on the sailboat. Find out the magnitude and direction of the net external force on the sailboat.
A rifle with a barrel length of 56 cm fires a 14 g bullet with a horizontal speed of 350 m/s/s. The bullet strikes a block of wood and penetrates to a depth of 13 cm.
What tension is necessary to tune string properly
Each is afraid that one vine will break; as a result they grab each other and hang on. They swing upward together, reaching a point where the vines make an angle of 22.1° with the vertical. Find the value of the ratio m/M.
What is the reading of spring scale
Find out an average acceleration of the motorcycle
Assume, instead, that the observer had been moving away from Earth with a speed of 0.80c. How much time would observer have measured for the car to be filled in this case.
A 75-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 cm in diameter. Find out the pressure exerted on the floor by each leg of the chair; assume the weight is evenly distributed.
What are angles of refraction
Horse races once around a circular track in a time of 176 s, with a speed of 26 m/s. What is the radius of the track.
Compute the force of tension or compression
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