A 0.5-kg rock is thrown with a velocity of 4 meters per second. What is the rock's kinetic energy? The answer will be in joules, but you DO NOT NEED to write the units
A 0.5-kg rock is thrown with a velocity of 4 meters per second. What is the...
a rock is thrown horizontally at 50 meters per second from the top of the 200 meter building how far from the bottom of the building does the rock land
A rock with a mass of 3.80 kg is moving with velocity (6.609 - 1.409) m/s. (HINT: v2 = v.v.) (a) What is the rock's kinetic energy (in )) at this velocity? 86.48 (b) Find the net work (in )) on the rock if its velocity changes to (8.00î + 4.00)) m/s. 25.41 x Find the square of the velocity using the hint given, and then use the definition of kinetic energy to calculate the new kinetic energy. The change...
You throw a frisbee of mass m = 0.5 kg, and radius r = 0.1 meters, off of a hill, with initial translational speed of v0 = 5 m/s, from a height of h0 = 3 meters. The tangential speed of the edge of the frisbee is equal to the initial translational speed, and doesn't change as it travels through the air. Treat the frisbee as a solid disk, and ignore air resistance. a) What is the initial total Kinetic...
If a rock is thrown upward on the planet Mars with a velocity of 10 m/s, its height (in meters) after t seconds is given by H= 10t-1.86t^2. a). Find thevelocity of the rock after one second. b). Find the velocity of the rock when t=a. c). When will the rock hit the surface? d). With what velocity will the rock hit thesurface?
Much appreciated! In outer space rock 1, with mass 4 kg and velocity < 4300, -2600, 2000 > m/s, struck rock 2, which was at rest. After the collision, rock 1's velocity is < 4100, -2000, 2400 > m/s. What is the final momentum of rock 2? 728= (800,2400, – 1600) kg : m/s Before the collision, what was the kinetic energy of rock 1? K11 = 1.2e+08 X I Before the collision, what was the kinetic energy of rock...
A ball of mass 0.293 kilograms is thrown at 20.0 meters per second to a skater standing on ice with arms outstretched. The skater has mass 61.0 kilograms and moment of inertia 1.44 kilogram·meters squared. After catching the ball, at a distance of 0.571 meters from the skater's center, the skater both recoils and rotates. a)What is the skater's final linear speed? b)What is the skater's final angular speed? c)How much kinetic energy is lost in the collision?
Suppose an elephant has a mass of 2850 kg. How fast, in meters per second, does the elephant need to move to have the same kinetic energy as a 78.5-kg sprinter running at 10.5 m/s?
A second rock is thrown straight upward with a speed 3.750 m/s. If this rock takes 2.771 s to fall to the ground, from what height H was it released? Express your answer in meters to three significant figures. View Available Hint(s)
If a rock is thrown upward on the planet Mars with a velocity of 17 m/s, its height (in meters) after t seconds is given by H = 17t - 1.86t^2.(a) Find the velocity of the rock after two seconds.(b) Find the velocity of the rock when t = a.(c) When will the rock hit the surface? (Round your answer to one decimal place.)(d) With what velocity will the rock hit the surface?
8. A 1.50 kg rock is thrown straight up with an initial velocity of 14.9 m/s from a cliff. What is the impulse received from the force of gravity over the next 0.5 s? Assume positive direction up. (a) - 7.35 N.S (b) 29.35 Nos. (c) - 37.35 N:s (d) 37.35 N:s