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aleksley [76]
3 years ago
10

At a race track, a car of mass 1150 kg crashes into a concrete wall at a speed of 85 m/s a. If the car comes to a stop when it h

its the wall, what the magnitude of the impulse applied to the car? The car crashed into the wall, stopping in 0.1 seconds. What force is applied to the car?
Physics
1 answer:
lukranit [14]3 years ago
5 0

Answer:

Explanation:

This is a momentum / impulse question.   Δp = F•(Δt)

The momentum of the car goes from 1150*85 = 97750 to 0 in 0.1 seconds.

From this we get the equation 97750 = F(.1)

 a)   F = 977500 N

For part b), the change in momentum is unchanged, so we must increase the time in order to decrease the force.

97750 = 200000(t)

b)       t = 0.49 s  or .5 s considering sig figs which means an increase factor of 5

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Can someone help me?!!!!!
german
<h2>Hello!</h2>

The answer is:

The first option,  the walker traveled 360m more than the actual distance between the start and the end points.

Why?

Since each block is 180 m long, we need to calculate the vertical and the horizontal distance, in order to calculate how farther did the travel walk between the start and the end points (displacement).

So, calculating we have:

Traveler:

Distance=NorthCoveredDistance+EastCoveredDistance

Distance=4*180m+3*180m=720m+540m=1260m

Actual distance between the start and the end point (displacement):

ActualDistance=\sqrt{NorthDistance+EastDistance}\\\\ActualDistance=\sqrt{NorthDistance^{2} +EastDistance^{2}}\\\\ActualDistance=\sqrt{(720m)^{2} +(540m)^{2}}\\\\ActualDistance=\sqrt{518400m^{2} +291600m^{2}}\\\\ActualDistance=\sqrt{810000m^{2}}=900m

Now, to calculate how much farter did the traveler walk, we need to use the following equation:

DistanceDifference=WalkerCoveredDistance-ActualDistance\\\\DistanceDifference=1260m-900m=360m

Therefore, we have that distance differnce between the distance covered by the walker and the actual distance is 360m.

Hence, we have that the walker traveled 360m more than the actual distance between the start point and the end point.

Have a nice day!

3 0
3 years ago
What’s the answer to 12
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