Open QuestionCALC A particle of mass m is at rest at t=0 . Its momentum for t>0 is given by px = 6t² kg m/s ,where t is in s. Find an expression for Fx(t) , the force exerted on the particle as a function of time.
Open QuestionCALC A 500 g particle has velocity vx = −5.0 m/s at t=−2 s .Force Fx= (4−t²) N , where t is in s, is exerted on the particle between t=−2 s and t=2 s . This force increases from 0 N at t=−2 s to 4 N at t=0 s and then back to 0 N at t=2 s . What is the particle's velocity at t=2 s?
Multiple ChoiceHow fast would you have to throw a 150-g rock for it to have the same momentum as a 10-g sniper rifle bullet traveling at 900 m/s?
Multiple ChoiceA250 grubber ball bounces off a wall. As it strikes the wall, it is moving in the negative x-direction at11m/s,and as it bounces off, it is moving in the positive x-direction at10m/s. What is the impulse on the ball from the wall?
Multiple ChoiceThree cars approach an intersection: an 800 kg car moves in the positive x-direction at 10m/s, a 1200 kg car moves in the negative x-direction at 5m/s, and a 900 kg car moves in the positive y-direction at 12m/s. What is the total momentum of this system of three cars? Give your answer as a magnitude and an angle counterclockwise from the positive x-axis.
Open QuestionTwo vehicles are approaching an intersection. One is a 2500-kg pickup traveling at 14.0 m/s from east to west (the -x-direction), and the other is a 1500-kg sedan going from south to north (the +y-direction) at 23.0 m/s. (b) What are the magnitude and direction of the net momentum?
Open QuestionTwo vehicles are approaching an intersection. One is a 2500-kg pickup traveling at 14.0 m/s from east to west (the -x-direction), and the other is a 1500-kg sedan going from south to north (the +y-direction) at 23.0 m/s. (a) Find the x- and y-components of the net momentum of this system.
Open Question(I) What is the magnitude of the momentum of a 32-g sparrow flying with a speed of 8.4 m/s?