A 10 kg penguin slides across a patch of ice at a speed of 5.0 m/s in the direction 60° with respect to the +x axis. A gust of wind applies a constant force of 3.7N . â on the penguin for 7.2 s. What is the penguin's final momentum?. Pick the correct answer 28NS · ââ + 25NS · ŷ C 52NS · ââ + 43NS · ŷ O 70NS · â + 43NS · ŷ C 33NS · â + 25NS · ŷ

A 56 g base ball is travelling at 40 m/s.  When it hits with the baseball bat, you exert an average force of 78 N, sending the ball back at 30 m/s. How long was the baseball in contact with the bat? Please answer in m/s

A 9 kg steel ball strikes a wall with a speed of 4.98 m/s at an angle of 30.7° with the normal to the wall. It bounces off with the same speed and angle, as shown in the figure. y 4.98 m/s 30.7° T 30.7° 9 kg 9 kg 4.98 m/s x If the ball is in contact with the wall for 0.255 s, what is the magnitude of the average force exerted on the ball by the wall? Answer in units of N. Your response... i Previous Responses X #1. 201.5089 PALETTE

The carbon isotope 14C is used for carbon dating of archaeological artefacts. 14C decays to 14N by a process known as beta decay, in which the nucleus emits an electron (also known as a beta particle) and a subatomic particle called a neutrino. In one such decay, the electron and the neutrino are emitted in opposite directions to each other. The electron has a speed of 5 x 10 m/s and the neutrino has a momentum of 5 x 1024 kg m/s. n as What is the recoil speed of the resulting 14N nucleus? (Take the mass of the carbon-14 and nitrogen-14 nuclei to be 2.34 x 10 26 kg and the mass of the electron to be 9.11 x 1031 kg. If you were aware of such things and concerned, please ignore relativistic effects.)

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In a circus act, a 55.5 kg clown with 2.5 m/s horizontal velocity jumps into the air and is caught by a 72.5 kg clown who was initially at rest. The clown is sitting on a sheet of ice, and moves off at some new velocity, after the two clowns are stuck together. How much kinetic energy is lost during this process? Options for answers: 98.2 J 348.6 J 18.9 J 0 J

A pitcher claims he can throw a 0.148-kg baseball with as much momentum as a 3.28-g bullet moving with a speed of 1.50 x 10³ m/s. (a) What must the baseball's speed be if the pitcher's claim is valid? m/s (b) which has greater kinetic energy, the ball or the bullet? O The bullet has greater kinetic energy. The ball has greater kinetic energy. O Both have the same kinetic energy.

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The ballistic pendulum is a device to measure the speed of a bullet using conservation of energy and momentum. A 20 g bullet is fired horizontally into a 1.1 kg wood block hanging from a 1.2-m-long string. The bullet embeds itself into the block, and the block then swings out to an angle of 35°. A. How high does the block of wood go relative to its initial height when its hanging straight down? B. What is the increase in gravitational potential energy of the wood block at its maximum height? C. Use conservation of energy to determine the speed of the block just after the bullet strikes it. D. Use conservation of momentum to determine the speed of the bullet right before it strikes the block.

Suppose F₁ = 2000 N. (Figure 1) You may want to review (Pages 262-266). Figure F, (N) F 0- 0 N. 2 4 6 1 of 1 -t (ms) Part A What impulse does the force shown in the figure exert on a 250 g particle? Express your answer in newton-seconds to two significant figures. WD ΑΣΦ J = Submit Previous Answers Request Answer X Incorrect; Try Again Provide Feedback ? N.S