An airplane flies at 40 m/s at an altitude of 50 m. The pilot drops a heavy package that falls to the ground below. Neglecting air resistance, the package will land

A 91 kg janitor wearing running shoes is running across an ice rink at a speed of 3.2 m/s. They try to stop abruptly, but keep sliding across the surface of the ice. The ice exerts a frictional force of 13.4 N to slow them down. How far do they travel before halting to a stop?

The friction force that a horizontal surface exerts on a 62 kg object is 23 N. If the initial speed of the object is 27 m/s, what distance will it slide before coming to a stop?

A 0.005 kg coin is dropped off of a 10 m tall bridge.  Assuming there is no friction or air resistance, how fast is it going, in m/s, right before it hits the ground?

A clever coyote uses rocket powered skates to try to catch a roadrunner. The mass of the coyote is 38.1 kg. If the coyote starts from rest, and accelerates to a final speed of 26 m/s in a distance of 2.4 m, how much thrust force did the rockets excert to get him to his final speed? Assume this thrust is constant over the 2.4 m.

Problem 10: While watching the clouds pass by, you notice a European swallow flying horizontally at a height of h = 21.95 m. When the swallow is directly overhead, it drops an m = 10.5 kg coconut. Refer to the diagram. From your ornithological studies, you know that the air-speed of this particular species of swallow, while carrying such a load, is vo = 6.93 m/s. Neglect air resistance. Assume that your head is at the origin of the coordinate system. Part (a) Calculate the magnitude, in kilogram squared meters per second, of the angular momentum of the coconut, as observed by you, at the moment it is released directly overhead. L = 1597.19 L= 1597 V Correct! Part (b) Let 7 be the time-dependent position vector of the coconut with time measured from the instant it was released by the swallow. Enter an expression for its horizontal component as a function of time. r(1) = vot v Correct! Part (c) Enter an expression, in unit vector notation, for the time-dependent velocity vector, v(1), of…

An object of mass 12.9 kg enters a rough floor with speed of 10.1 m/s. The coefficient of friction between the floor and the object is 0.30 and the object moves 2.07 m before returning to a smooth surface (frictionless). What is the velocity of the object once it returns to the smooth surface?

A child riding a bicycle has a total mass of 30.6 kg. The child approaches the top of a hill that is 27.9 m high 27.9 and is 86.8 m (ℓ)  long at 12.1 m/s. If the force of friction between the bicycle and the hill is 26.7 N, what is the child's velocity at the bottom of the hill? (Disregard air resistance, g = 9.8 m/s2.)

Dae-hyun, a man of mass 72 kg, steps from a table 92 cm to the floor below. Assume that his velocity is zero as he leaves the table. As he lands, he bends his knees so that he decelerates to a final speed of zero over a distance of 35 cm. (a) What is Dae-hyun's speed just as he starts to hit the floor? Type your answer here (b) As he decelerates, what is the magnitude of the force exerted on him by the floor? Assume constant acceleration. x10 to the power of Type your answer here Type your answer here (You may need to involve some kinematics to solve this one!) m/s N on Dae-hyun.

A 0.697 kg football is thrown upward with an initial speed of 49.7 m/s.  Neglecting wind resistance, what is the force on the ball when it reaches half its maximum height? Use g=9.8 m/s