physics homework help. please do both of them and take points worth for 2 questi

Question

physics homework help. please do both of them and take points worth for 2 questions

1) A car travels at constant speed v up a hill with a slope of 30 degree,from point A to point B, as shown in the diagram below. Horizontal a) b) Draw the force diagram for the car next to the diagram above. For the mass of 2000kg and v 5m/s for the car, how many meter can it move up? A 0.235-kg bead slides on a curved wire, starting from rest at point A in the diagram at the right. If the wire is frictionless, find the speed of the bead (in m/s) at point C. The height of point A is 5.04 m and the height at point C is 1.54 meters. 2) 3) A 0.30 kg softball has a velocity vo of 12.6 m/s at an angle of 35o below the horizontal just before making contact with a bat. The ball leaves the bat 2.1 ms later with a vertical velocity of magnitude I

Explanation / Answer

The free body diagram is as below:

ii. Given:

mass = M = 2500 kg

initial velocity = vi = 5 m/s

deceleration for the car= a = g sin 30 9 deceleration because car is moving up whereas g sin 30 is acting down the incline)

=9.8 x 0.5

=4.9 m/s2

As car comes to rest, final velocity = vf =0

We need to find the distance covered=s=?

The formula applicable is

vf2 - vi2 = 2as

so, 0 - 25 = 2 x (-4.9) x s (-ve sign because deceleration)

so, s = 2.55 m

the car can move up 2.55 m

ALL THE BEST IN THE COURSE WORK

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