Three forces are acting on a 20kg mass as shown below: (assume North is up)30N30N20 kg+60N>What is the magnitude and direction of the mass's acceleration?42.4 m/s² NW2.1 m/s² NE42.4m/s² NE2.1m/s² NW2.1m/s² SEQuestion 3 (1 point)MacBook Pro2C#3$4%95&67* 890BWERTYU10PSDGHJKL

Answered: Three forces are acting on a 20kg mass…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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An antitank weapon fires a 3.00-kg projectile which acquires a speed of 50.0 m/s after traveling 90.0 cm down a launching tube. Assuming the projectile was accelerated uniformly, what was the average force that acted on it? a. 4.17×(10^3)N b. 3.62×(10^3)N C. 2.82×(10^3)N d. 2.00×(10^3)N
Matthew Damon is a 70-kg astronaut on a space-walk outside the international space station. He is at rest when the tether line connecting him to the space station breaks. In order to make it back to the space station he throws his 2.0-kg hammer at a speed of 14 m/s away from the space station. As a result, what speed does the astronaut move toward the capsule? a) 1.5 m/s b) 5.0 m/s c) 0.40 m/s d) 3.5 m/s
8) Your mass is 68.8 kg, and the sled s mass is 11.3 kg. You start at rest, and then you jump off the sled, after which the empty sled is traveling at a speed of 3.10 m/s. What will be your speed on the ice after jumping off? Question 8 options: 0.36 m/s 0.71 m/s 0.61 m/s 0.51 m/s 9) Your mass is 87.6 kg, and the sled s mass is 14.4 kg. The sled is moving by itself on the ice at 3.16 m/s. You parachute vertically down onto the sled, and land gently. What is the sled s velocity with you now on it? Question 9 options: 0.45 m/s 0.32 m/s 0.77 m/s 0.61 m/s
A1500 kg car was moving +31 (E) in the exit lane, but 7.0 s later only +10 "/ (E) at the exit ramp. a) what was the car's average acceleration during that interval? +20.5 m/ s² (E) +21 m/s (E) -21 m/s (W) +3 m/g² (E) +5.86 "/g² (E) -3 "/s² (W) m
An arrow hits a tree penetrating 10 cm as it is brought to rest from its initial speed of 50 m/s inside the tree. The arrows mass was 50 g. a) what average force did the tree exert on the arrow to bring it to rest?
3. A0.03-lb bullet traveling at 1300 ft/s strikes the 10-lb wooden block and exits the other side at 50 ft/s as shown. Determine the speed of the block just after the bullet exits the block, and also determine how far the block slides before it stops. The coefficient of friction between the block and the surface is u = 0.5. 50 ft/s 13 4 1300 ft/s 12
An Atwood’s machine is set up by suspending two blocks connected by a string of negligible mass over a pulley, as shown above. The blocks are initially held at rest and then released at time t0=0 s. The speed of the 3 kg block at time t1=2.0 s is most nearly: A) 2.0 m/s B) 4.0 m/s C) 7.0 m/s D) 10.0 m/s
10.) A tennis ball (m = 0.2 kg) is thrown at a brick wall. It is traveling horizontally at 16 m/s just before hitting the wall and rebounds from the wall at 10 m/s, still traveling horizontally. The ball is in contact with the wall for 0.02 s. What is the magnitude of the average force of the wall on the ball? ____________________ N
4. The parking brake fails on a parked car at the top of a hill and it rolls down the hill ¹. At that same moment an SUV is coming down a cross street at the bottom of the hill, moving at 30 miles per hour. (See diagram below.) The mass of the car is 1000 kg. The mass of the SUV is 3000 kg. a) Find the speed of the car when it reaches the bottom of the hill. b) The car and SUV collide and move off together. Find their velocity immediately after the collision. ¹ Note that the wheels of a car are so much lighter than the car itself that their rotation is negligible. In short, a rolling car acts like a sliding object, not like a rolling object. W. View from Above N E Hill Side View of the Hill 10m 40°
how much force do the expanding gases in a gun barrel exert on a 6.0g bullet as it accelerates from rest to 500.0m/s in the 0.70 m long barrel
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