A train with a constant speed of 60km/h goes east for 40min. Then it goes45 north-east for20min. And finally it goes west for 50min. What is the average velocity of the train?

Q: 2) A freighter travels at 5 knots down a river which is flowing at 2 knots. A tugboat proceeds…

A: Given information:A freighter is moving downstream in a river at a speed of 5 knots. The river…

Q: In the figure, the elevator E descends with a speed of 1 m/s, increasing at a rate of 0.1 m/s^2…

A: The speed of elevator is The acceleration of elevator is

Q: Airplane A is flying northeast with a constant horizontal velocity of 500 km/h. Airplane B is flying…

A:

Q: Q2. A car moves at 30 m/s as shown. The radius of the curve is 40 m. Upon entering the curve, the…

A:

Q: 0.20 A particle travels around the curve shown, following reº m, with 0(t) = 0.5t² rad. At the…

A: The radial displacement is The angular displacement is And at the instant

Q: A truck travelling at 70km/h suddenly puts on the brakes and it takes 50 seconds to travel the next…

A:

Q: Q15. As shown in the image below, a man starts from point A, and tries to swim across a 40-ft wide…

A: Given date:- d = 43 ft  Vm/r = 6 ft /sec Vr= 2.6 ft /s

Q: Car A is moving with constant speed v on the straight and level highway. The police officer in the…

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Q: The motion of a particle along a straight line is defined by S = 3 -t3 – 36t. When the particle…

A:

Q: During the middle of a family picnic, Barry Allen received a message that his friends Bruce and Hal…

A:

Q: The hinged rod is rotating counterclockwise at a rate of 1rad/s. The slider moves with respect to…

A: Given That: ω = 1 rad/sec vt = 1m/sec r = 1 m Now,  FBD:

Q: A car is about to pass through an arc bridge, as shown in the figure below. Given that the speed of…

A: The velocity of car is constant .The equation of parabola is .

Q: Q10. As shown in the image below, a block is being lifted using the cable and pulley system. (The…

A: Given data, Velocity of the end, v = 7.7 m/s To determine, the velocity of the block

Q: A boat travels across a river. A boat moves at 7 m/s relative to the water. The river is flowing at…

A:

Q: A partcile moves along a path defined as r02 = b in a polar %3D corrdinate system. Find its velocity…

A:

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.