To the right What is the acceleration of The car? How far does the car go in 10

Question

To the right What is the acceleration of The car? How far does the car go in 10 Seconds? 4. A 1200 car going 20 m/s stops. what is its change nkretic energy? What additional informetion do you need to calculete the braking force? Choose a reasonable value and calculate the force. s. For the masses to the right calculate the Acceleration and the tension in the string. gnore friction 6. A bat is kicked 25 m/s at an angle of 30 degrees above the hericontel from a height of 1o 7. A roller coaster is 50 meters high, if the coaster has a speed ot 2 my's at the top, what is its speed 8. A 1000 kg car going 20 m/s bumps a 1200 kg car going 15 m/s in the same directian. After the meters. How ter does the ball go horizontally before it hits the ground? at the bottom anore friction and air resistence. bump they lock bumpers and travel together down the road. What is their combined PE - mgh Ft MAV

Explanation / Answer

Solving 3rd question

a=slope of v-t graph .In the figure value of v is not clear.It looks like 38 m/s

So a=38/10=3.8 m/s*s

Also using

S=ut+0.5a*t*t

u=0 m/s

We got

S=190m

Q4

Change in KE=0.5*m*v*v=240000 J

We need distance travelled before it stops to calculate average braking force

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