Temperature has a direct effect on the pressure of a gas.
If the pressure is constant and the gas is free to fill more
or less space, then temperature also has a direct effect on
the volume of the gas.
The Average acceleration is 3.25m/s².
Acceleration is the change in velocity of the body with respect to time.
Where,
a= acceleration
u= initial speed
v= final speed
t= time
Initially, u = 2m/s
v = 16m/s
t = 3.5s
a = v-u/t
a = 16-2/3.5
a = 4m/s²
Then, u = 26m/s
v = 18m/s
t = 4s
a = v-u/t
a = 26-18/4
a =2 m/s²
Now, u = 0m/s
v = 20m/s
t = 2s
a = v-u/t
a = 20/2
a = 10m/s²
Finally, u = 20m/s
v = 10m/s
t = 2s
a = v-u/t
a = 10-20/2
a = -5m/s²
The average acceleration is the acceleration during the entire journey = 4+2+10-5/4
Average acceleration = 13/4m/s²
Average acceleration = 3.25m/s²
The Average acceleration is 3.25m/s²
Learn more about Acceleration here, brainly.com/question/2303856
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Answer:
159 N
Explanation:
The force of friction, Fr is a product of coefficient of feiction and the normal force. Therefore, Fr=uN where N is the normal force and u is coefficient of friction. Here, we have two coefficients of friction but since it is sliding, then we use coefficient of kinetic energy. Substituting 0.25 for u and 636 N for N then
Fr=0.25*636=159 N
Therefore, the force of friction is equivalent to 159 N
The answer is 1. 4 is incorrect because you can't really decrease the mass of the driver. 3 is incorrect because accelerating the driver would cause more damage than not. 2 is incorrect because decreasing the distance would only cause more damage. 1 is correct because by increasing the length of time the force acts on the driver helps reduce the speed of the driver and cause the drive to sustain less injuries. Hope that helps.
I think 4.69 x 108 charges have been removed
