Map Sapling Learning A 0.300-kg toy car moving with a speed of 0.820 m/s collide

Question

Map Sapling Learning A 0.300-kg toy car moving with a speed of 0.820 m/s collides with a wall. The figure below shows the force exerted on the car by the wall over the course of the collision. What is the magnitude of the velocity, or final speed, of the car after the ollision? Number FIN) final speed 22 m/s 45 ds) There is a hint availablel 0.01 0.02 View the hint by dicking on the bottom dvider divider bar again to hide the hint Glose O--.. Give Up & View Soldin 9Check Anwer ?Next 8Ert Windows

Explanation / Answer

let m = 0.3 kg
v1 = 0.82 m/s
v2 = ?

we know,

Impulse = Area under F-t curve

= (1/2)*(0.01/5)*36 + (0.01/5)*36 + (1/2)*(0.01/5)*9 + 2*(0.01/5)*36 + (1/2)*2*(0.01/5)*9 + (1/2)*2*(0.01/5)*36

= 0.351 N.s

use, Impulse = change in momentum

0.351 = m*(v2 - v1)

0.351/m = v2 - v1

==> v2 = 0.351/m + v1

= 0.351/0.3 + (-0.82)

= 0.35 m/s

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