The temperature of gas is -50°C. To what temperature the gas should be heated so that the rms speed is increased by 3 times?

A bus moving at a speed of 24 m/s begins to slow at a rate of 3 m/s each second. How far does it go before stopping?

A bus moving at a speed of 24 m/s begins to slow at a rate of 3 m/s each second. How far does it go before stopping?