Author Question: At time t = 0.00 s, a car is traveling along a straight line at a speed of 20 m/s with constant ... (Read 52 times)

itsmyluck · **on:** Jul 29, 2018

At time t = 0.00 s, a car is traveling along a straight line at a speed of 20 m/s with constant acceleration. The car travels 56.0 m during the time interval between t = 2.00 s and t = 4.00 s. What is the acceleration of the car?

A)

14.0 m/ s2

B)

0.00 m/ s2

C)

7.00 m/ s2

D)

5.33 m/ s2

E)

2.67 m/ s2

Question 2

What is wrong with the following statements? A fixed quantity of ideal gas at constant volume is warmed from a temperature of 20C to 40C.

The pressure in the gas doubles during this process because the temperature doubles.
A)

The appropriate temperature does not double during this process, so the pressure does not double either.
B)

It is impossible to keep a fixed quantity of gas at constant volume during the temperature change specified in the problem.
C)

The pressure changes to one half its initial value during this process.
D)

The conclusion regarding the pressure cannot be reached because the mass of the ideal gas particles is unknown.
E)

The pressure change will depend on whether the ideal gas particles are monatomic or polyatomic.