If the original height of the rock is y, = h = 3.0 m, calculate the rock's speed when it has fallen to 1.0 m above the ground.

The drawing shows a skateboarder moving at 6.80 m/s along a horizontal section of a track that is slanted upward by 0 = 41.0° above the horizontal at its end, which is 0.780 m above the ground. When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track. 6.80m/s 0.780m

A bowling ball is attached to a 3.73-meter long cable and hung from the ceiling. The cable is kept taut and the ball is raised to an initial height of 1.73 meters above the classroom floor. It is released from rest and allowed to swing as a pendulum. Determine its speed (in m/s) when it is at a height of 1.19 meters above the floor. Answer: m/s (round to the nearest hundredth)

Please answer the question correctly. Thank you!!

The drawing shows a skateboarder moving at 6.70 m/s along a horizontal section of a track that is slanted upward by 0 = 48.0° above the horizontal at its end, which is 0.530 m above the ground. When she leaves the track, she follows the characteristic path of projectile motion. Ignoring friction and air resistance, find the maximum height H to which she rises above the end of the track. 6.70m/s 0.530m

A small block slides down a frictionless track whose shape is described by y = (x^2) /d for x<0 and by y = -(x^2)/d for x>0. The value of d = 4.15m, and x and y are measured in meters as usual.  Now suppose the blocks starts on the track at x = 3.35 m. The block is given a push to the left and begins to slide up the track, eventually reaching its maximum height at x = 0, at which point it turns around and begins sliding down. What was its initial speed in this case?     4.05 m/s     7.28 m/s     5.15 m/s     4.97 m/s

The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 4.9 m/s. Neglect nonconservative forces, such as friction and air resistance, and find the height h of the highest point reached by the skateboarder on the right side of the ramp. ✔ < i

The skateboarder in the drawing starts down the left side of the ramp with an initial speed of 5.0 m/s. Neglect nonconservative forces, such as friction and air resistance, and find the height h of the highest point reached by the skateboarder on the right side of the ramp. + 2.5

A skier, starting from rest, moves from the top of a ramp to the bottom.  If the vertical drop is 3.12 meters, what is the speed in m/s of the skateboarder at the bottom of the ramp. (neglect friction). Can you help with a visual aid; and then, explain the mechanics of calculation.

A skier is travelling horizontally across frictionless snow at 10 m/s. He goes up an also frictionless slope and his speed drops to 5 m/s at the top when he resumed moving horizontally. How high did he go?