When a car screeches to a sudden stop to avoid hitting a dog, it slows down from 9.00 m/s to 0.00 m/s in 1.50 s. find the average acceleration of the car.

a = - 6 m/s/s

here negative sign shows that velocity is decreasing with time

Explanation:

As we know that average acceleration is given by

here we will have

= final speed = 0 m/s

= initial speed = 9 m/s

= time interval = 1.50 s

now from above equation we will have

so average acceleration will be -6 m/s/s

the temperature in kelvin of 2.0 dm3 of an ideal gas is doubled and its pressure is increased by a factor of four. what is the final volume of the gas

answer///scientific method;