A bat strikes a 0.145 kg baseball. Just before impact, the ball is traveling horizontally to the right at 40.0 m/s; when it leaves the bat, the ball is traveling to the left at an angle of 30° above horizontal with a speed of 55.0 m/s. If the ball and bat are in contact for 1.75 ms, find the magnitude of the average force on the ball (in kN). (Round your answer to one digit after decimal point)

A rocket is fired vertically upward from the ground. The distance s in feet that the rocket travels from the ground after t seconds is given by s(t) = -16 t² + 560 t. Apply calculus to find the velocity of the rocket 3 seconds after being fired. Two objects move on a horizontal frictionless surface along the same line in the same direction which we shall refer to as the forward direction. The trailing object of mass has a velocity of forward. The leading object of mass has a velocity of forward. The trailing object catches up with the leading object and the two objects experience a completely inelastic collision. By using the rule of conservation of Momentum, calculate is the final velocity of each of the two objects?

A train of mass 9.26e+4 moving with a velocity of magnitude 72.9 hits a car of mass 1.78e+3 at rest. If the train exerts a force of magnitude 1.86e+3 on the car, what is the magnitude of the force exerted by the car on the train? All quantities are given in Sl units and the answer should be given as a positive or negative number in SI units. Only type a number into the answer box, do not type in units.

A rocket is fired vertically upward from the ground. The distance s in feet that the rocket travels from the ground after t seconds is given by s(t) = -16 t2 + 560 t. Apply calculus to find the velocity of the rocket 3 seconds after being fired. Two objects move on a horizontal frictionless surface along the same line in the same direction which we shall refer to as the forward direction. The trailing object of mass has a velocity of forward. The leading object of mass has a velocity of forward. The trailing object catches up with the leading object and the two objects experience a completely inelastic collision. By using the rule of conservation of Momentum, calculate is the final velocity of each of the two objects?

A 0.55 kg football is thrown with a velocity of 17 m/s to the right. A stationary receiver catches the ball and brings it to rest in 0.021 s. What is the force exerted on the receiver?Answer in units of N.

Consider a tennis ball of mass 0.040 kg making contact with a racquet at 23.7 m/s for 1.30 ms. If the return speed (assume 1-D motion) is 22.4 m/s, calculate the magnitude of the average force on the ball by the racquet. 0.900 x 10³ N O 1.260 x 10³ N 1.245 x 10³ N O 2.170 x 10³ N O 1.420 x 10³ N

The high-speed winds around a tornado can drive projectiles into trees, building walls, and even metal traffic signs. In a laboratory simulation, a standard wood toothpick was shot by pneumatic gun into an oak branch. The toothpick mass was 0.14 g, its speed before entering the branch was 221 m/s, and its penetration depth was 17 mm. If its speed was decreased at a uniform rate, what was the magnitude of the force of the branch on the toothpick?

A lazy fish sees your fishing hook. The fish is initially located at position (3 m,-2 m) and drifts towards the fishing hook that is located at position (6 m, 0 m). The fish is a real lunker and has a mass of m = 9.1 kg. a) What is the displacement vector for the fish during this time interval? Express your answer using unit-vector notation (i.e. ->Ar = _î + __j) (6 m, 0 m) |(3 m, -2 m) Suppose the river exerted a constant force of F* = (28 N)î – (14 N)ĵ on the fish as it moved toward the hook. b) How much work was done on the fish by the river?

A frog with some sort of little monster on his back is swimming in a bathtub of split tomato soup. The frog's mass is m1 = 0.0280 kg, and the monster's mass is m2 = 0.0300 kg. The frog propels the monster and himself forward with a constant force of F = 0.440 N and accelerates at a constant rate of a = 2.65 m/s^2.  a) What is the resistive force of the split tomato soup on the frog? b) If the frog starts at rest at one side of the bathtub and swims across its length in t = 1.91 s, how long is the bathtub? c) How much work is done by the split tomato soup on the frog?

Two objects (m1=11.0 kg and m2=3.00 kg) are separated by 40.0 cm. A third object (m3=1.00 kg) is placed at a location along the line connecting them such that the net force acting on it is zero. By considering the force vectors, this location must be between the two original objects. We will define x as the distance between m1 and m3 and y as the distance between m2 and m3.   1) Find the distance between 11.0-kg object and 1.00-kg object along the line AB where a small, 1.00-kg object could rest such that the net gravitational force on it due to the two objects shown is exactly zero. (Express your answer to two significant figures.)