a) A 11.0 g wad of sticky clay is hurled horizontally at a 130 g wooden block initially at rest on a horizontal surface. The clay sticks to the block. After impact, the block slides 7.50 m before coming to rest. If the coefficient of friction between block and surface is 0.650, what was the speed of the clay (in m/s) immediately before impact?  m/s

A 980-kgkg sports car collides into the rear end of a 2500-kgkg SUV stopped at a red light. The bumpers lock, the brakes are locked, and the two cars skid forward 2.9 mm before stopping. The police officer, estimating the coefficient of kinetic friction between tires and road to be 0.80, calculates the speed of the sports car at impact. v= ? m/s *0.40 and 0.76 m/s are wrong

Gayle runs at a speed of 3.20 m/s and dives on a sled, initially at rest on the top of a frictionless snow-covered hill. After she has descended a vertical distance of 5.00 m, her brother, who is initially at rest, hops on her back and together they continue down the hill. What is their speed at the bottom of the hill if the total vertical drop is 15.0 m? Gayle's mass is 45.0 kg, the sled has a mass of 5.25 kg and her brother has a mass of 30.0 kg. m/s

tolerance is 3 sig figs

Two bumper cars at the county fair are sliding toward one another (see figure below). Initially, bumper car 1 is traveling to the east at 5.62 m/s, and bumper car 2 is traveling 60.0° south of west at 10.00 m/s. After they collide, bumper car 1 is observed to be traveling to the west with a speed of 3.24 m/s. Friction is negligible between the cars and the ground.   (a) If the masses of bumper cars 1 and 2 are 588 kg and 633 kg respectively, what is the velocity of bumper car 2 immediately after the collision? (Express your answer in vector form. Enter your answer to at least three significant figures.)   (b) What is the kinetic energy lost in the collision?

Blocks A, B, and C are aligned along a straight line on a horizontal frictionless surface. The masses of the blocks are M, 3M and 4M, respectively. Block A is initially moving to the right along the same line at a speed v, as shown in the figure. Blocks B and C are initially at rest. Block A collides with and sticks to block B. The two blocks then collide with and stick to block C. What is the speed of * ?block C after the collisions Block A Block B Block C 8v v/4 0. v/3 O v/8 O

= = The coefficient of friction between the block of mass m₁ 3.00 kg and the surface in the figure below is μK: rest. What is the speed of the ball of mass m2 = 5.00 kg when it has fallen a distance h = 1.70 m? m/s m₁ m₂ 0.445. The system starts from

A 32,912 kg freight car is coasting at .84 m/s with negligble friction under a hopper that dumps 118,359 kg of scrap metal into it. (a) What is the final velocity (in m/s) of the loaded freight car? Number (b) What is the magnitude of the kinetic energy lost in this process of loading the freight car? Number