12) A car has a mass of 1500 kg. If the driver applies the brakes while on a gra
ID: 1879015 • Letter: 1
Question
12) A car has a mass of 1500 kg. If the driver applies the brakes while on a gravel road, the maximum friction force that the tires can provide without skidding is about 7000 N.
If the car is moving at 22 m/s, what is the shortest distance in which the car can stop safely?
Item 8 8 of 12 Constants Periodic Table Part A (Figure 1) shows an acceleration-versus-force graph for three objects pulled by identical rubber bands. The mass of object 2 is 0.20 kg What is the mass of object 1? Express your answer with the appropriate units Figure 1 of 1 LA m Value Units m1E a (m/s) Submit Request Answer Part B What is the mass of object 3? 0 Express your answer with the appropriate units 0 2 3 4 5 6Explanation / Answer
8.
Mass of 1= mass 2* 2/5= 0.08 kg
Mass of 3= mass 2* 5/2= 0.5 kg
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10.
F= mv/t= 0.025*1= 0.025 N
F/Fs= 0.025/0.25
F= (1/10) of the weight of scallop
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11.
a= v/t= 12/0.002= 6000 m/s^2
F= ma= 0.14*6000= 840 N
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12
a= 7000/1500= = 4.67 m/s^2
D= u^2/(2a)= 22^2/(2*4.67)= 51.857 m
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Comment in case any doubt.. good luck
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