Hw Part 2

A 500kg car exerts 5,000,000 N of force (5x106 N) on a 100 kg billboard (large advertisement) located on the roadside when the car hits it with a head on collision. With what force does the billboard exert on the car?  1000 N 238,000 N 5,000,000 N 12,000,000 N

Thor drops his hammer with a mass equal to 300 billion elephants off of Stark Tower (425 m). How fast will it be traveling just before it strikes the ground? part b - Tony Stark drops his lucky penny at the same time. How fast will his lucky penny be traveling just before it strikes the ground?

5. Use the new equation from question 4 to solve this problem: a 50-kg woman wearing a seatbelt is traveling in a car moving at 10 m/s. The car is suddenly brought to a stop, in a time span of 0.50 seconds. How much force must the seat belt exert on the woman so that she remains in her seat? 6. What is the speed of a 2.0 x 10°kg space shuttle after 10 seconds of its lift-off thrust of 1.0 x 10'newtons? Note: thrust is a kind of force. 7. If a net force of 10 N acts on a 6-kg mass for 8.0 s, what is the total change of momentum of the mass? (careful!) (but be careful about being careful!!) 8. What impulse is needed to bring a resting 1500-kg car up to a speed of 20 m/s ?

Az + pgh, pv? Question 15 A car traveling at 26.4 m/s hits a tree. A passenger in the car, who has a mass of 64.0 kg moves forward a distance of 56.0 cm while being brought to rest by an inflated air bag. Assuming that the force is constant, what is the magnitude of the force on the passenger? 39,000

5. The graph shows the variation with time t of the force F acting on an object of mass 15000 kg. The object is at rest at t=0. A. B. C. F/KN D. 6ms-1 12 ms-¹ 7 180 m s¹ 6 LO 5 4 3 What is the speed of the object when t= 30 s? 0.18 ms ¹ 2 1 0 0 5 10 15 t/s 20 25 30

The froghopper holds the title of the best jumper of the animal world. A 0.0198-gram (1.98 X 10-5 kg) froghopper can accelerate from 0m/s to 4m/s in only one one thousandth of a second (0.001 s) as it jumps. What is the force delivered to the froghopper as it makes this jump?

On Earth, a squash weighs 5kg. An astronaut transports it into space on its way to Mars, where the acceleration due to gravity is at 3.7 m/s2. Which of the following statements is correct? a. The squash's mass and weight on Mars' surface are 5kg and 49N, respectively. b. The squash's mass and weight on Mars' surface are 5kg and 18.5N, respectively. c. The squash's mass and weight on Mars' surface are 18.5N and 5kg, respectively. d. The squash's mass and weight on Mars' surface are 49N and 18.5N, respectively.

The position of a 2.6 kg mass is given by x=(2t3−5t2) m, where t is in seconds. What is the net horizontal force on the mass at t=0s?   What is the net horizontal force on the mass at t=1s?

In the potential energy experiment. If the kinetic energy of the system composed of masses m, and m2 is 0.648 J. Given that the masses are moving at a speed of 1.23 m/s find the mass of the cart m, ( in units of kg) when m2= 110 g. т, m2 Select one: O A. 1.054 O B. 1.071 O C. 0.747 O D. 0.857 O E. 0.318

1. A newborn baby’s brain grows rapidly.In fact, it has been found to increase in mass by about 1.6 mgper minute. (a) How much does the brain’s weight increase in one day? (b) How long does it take for the brain’s weight to increase by 0.15 N? Graph and Explain.

A person of mass 50kg is falling at a terminal velocity of 60m/s. how much force does a superhero need to exert if it takes 0.1sec to stop the fall? If the person can withstand a maximum acceleration of 7g, what minimum time should it take the superhero to stop the fall?   ans: 1.02s

You stand on the seat of a chair and then hop off. (a) During the time you are in flight down to the floor, the Earth moves toward you with what acceleration? Model the Earth as a perfectly solid object. (Assume your mass is 50.0 kg.) 8.1939x10^-23 m/s2 Explain your logic. (b) The Earth moves toward you through what distance? (Assume the seat is 49.5 cm high.) 1.3020x10^-23 m

500 gram

When a mass M experiences a velocity change of v in a time of t, it experiences a force of F. Assuming the same velocity change of v, the force experienced by a mass of (1/2)M in a time of (1/2)t is ____. a. 2F b. 4F c. (1/2)*F d. (1/4)*F e. none of these

Object 1: mass= 0.016300 (kg) weight= (Newtons) distances 1.545 (m) 1.485 (m) 1.375 (m) 1.215 (m) 1.005 (m) t (s) g (m/s²) t (s) g (m/s²) t (s) g (m/s²) t (s) g (m/s²) t (s) g (m/s²) 1 0.56270 0.55116 0.53080 0.49970 0.45360 2 0.56220 0.55028 0.53100 0.49884 0.45470 3 0.56190 0.55030 0.53098 0.49791 0.45428 Mean g (m/s?) Overall Mean g (m/s²):_ Standard Deviation (m/s²): %Error: Trial

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I. A 10.0 kg mass is acted on by the two forces: F = (3.0N)î + (2.0N)j and F, = (10.0N)i + (-7.0N) a) Express the summation of these two forces in unit vector notation. That is: %3D %3! F=F F+F, b) What is the acceleration of this mass while these forces are acting? Write your answer in unit vector notation form. c) What is the direction of the acceleration (give the angle of acceleration with the x axis) and its magnetitude?

On a snowy road, a driver applies a braking force of 6017 N on his 1174 kg car. The car travels between two points a distance of 39.6 m along the snowy road in 2.39 s. How fast is the car moving when it passed by the first point?

A 2.0-kg brick is moving at a speed of 6.0 m/s. How large a force F  is needed to stop the brick in a time of 0.7 ms?

In the potential energy experiment. If the kinetic energy of the system composed of masses m, and m, is 0.73 J. Given that the masses are moving at a speed of 1.59 m/s find the mass of the cart m, ( in units of kg) when m2 110 g. m, m2 Select one: OA. 0.468 OB. 0.918 OC 0.578 OD. 0.179 OE. 0.722 Activate Windows Go to Settings to activate Windo Next page page ENG 4:59 UK 5/24/2

Two forces act on a 2.90 kg object, the gravitational force and a second, constant force. The object starts from rest and in 1.20 s is displaced (4.10 3.30ĵ) m. Write the second force in unit vector notation. (Enter your answer in kg. m/s². Assume the gravitational force acts in the -ĵ direction.) kg. m/s² F

900 750 600 0 0 2 6. Henry and Elevator : Henry gets into an elevator on the 50th floor of a building and stands on a weighing scale. The elevator begins moving at t=0 s. The figure shows his scale reading over the next 12s. a) Is the elevator's initial direction up or down? Explain how you can tell. b) What is Henry's mass? c) How far Henry travelled at t = 12s? 4 6 8 10 12 -1 (s)

A runaway train car that has a mass of 1.68e+4 kg travels at a speed of 7.60 m/s down a track. Compute the time required for a force of 1.57e+3 N to bring the car to rest.  a numerical answer below. Accepted formats are numbers or "e" based scientific notation e.g. 0.23, -2, 1e6, 5.23e-8   ....s

2. A mass of 4 kg is dropped with a velocity of 5 m/s. a. Find an expression for the velocity of an object if the force due to air resistance is 60v. b. Find the limiting velocity for the object.

On Planet #1, you drop a stone from rest, 57.0 m above the ground, and the stone hits the ground 4.26 s later. What is the value of g on Planet #1?     26.76 m/s^2     6.28 m/s^2     3.14 m/s^2     13.38 m/s^2

A batter strikes a baseball of mass 0.15 kg with a force of 18,000 N. What is the acceleration of the baseball? Question 9 options: 9.8 m/s/s 120,000 m/s/s 2,700 m/s/s 8.3 m/s/s