A 75Kg kid is riding a 5kg skateboard at 3m/s. The kid jumps off the front of the moving board and lands on the ground moving at 6m/s. What is the velocity of the skateboard after the kid jumps off?

Q: initial speed of the ball

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Q: A 145 g baseball traveling directly to the left at a speed of 32 m/s reverses its direction of…

A: Given data: Mass of the baseball m=145 g      =0.145 kg Initial speed is v0=32 m/s Its direction is…

Q: A 58 g superball traveling at 20 m/s collides with a wall and rebounded at 19 m/s. A high-speed…

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Q: a 9.2kg block of wood resting on a platform was hit by a 32g of bullet traveling upward with a speed…

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Q: Juliet has been captured by Thugs and is being held in a castle surrounded by a 75.0 m wide moat…

A: Height (h) = 8 m Velocity (v) = 27 msθ = 38oHorizontal distance (d) = 75 m

Q: A man sees a 38.9 Kg cart about to bump into a wall of 1.3 m/s. If the cart is 0.124 m from the wall…

A: Given data The mass of the cart is m = 38.9 kg The initial velocity of the cart is u = 1.3 m/s The…

Q: Car A is moving to the right at 0.5m/s. Meanwhile, Car B, which is 6 meters to the right of car A…

A: Velocity of car A = 0.5 ms towards right Velocity of car B = 0.25 ms  towards left Distance between…

Q: 40 identical balls are rolling along a straight line. They all have speed equal to v, but some of…

A: Concept: Here in this question, Since all the Balls are rolling along a straight line, For the…

Q: You and another astronaut are in space.  You throw a tool to them that has a mass of 15kg.  Your…

A: Mass of tool, mt = 15 kg Your mass, my = 91 kg Other astronaut's mass, ma = 88 kg Speed of tool, vt…

Q: James realizes that he can try to get Kevin by having two balls roll down from opposite hills. Ball…

A: Given, Mass of balls, m1=15 kg, m2=20 kg Heights of balls, h1=32 m,h2=18.5 m

Q: You and another astronaut are in space. You throw a tool to them that has a mass of 17kg. Your…

A: Velocity of tool with respect to first astronaut at the point of release of tool = 7m Let after…

Q: A 35.0 g bullet strikes a 5.0 kg stationary wooden block and embeds itself in the block. The bullet…

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Q: Suppose you are navigating a spacecraft far from other objects. The mass of the spacecraft is 4.0 x…

A: Solution:-(1) Given thatmass (m)=4×104 kgconstant velocity (u→)=<0, 22, 0> km/s=22 j^…

Q: A 3.00 lg cart with an initial velocity of +4.00 m/s collides inelastically with a 5.00 kg cart with…

A: The mass of the first cart is, m1=3 kg The initial velocity of the first cart is, u1=4 m/s The mass…

Q: A 1.5 kg rocket is shot from the ground with an initial velocity of 50 m/s. How high does go before…

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Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.