Question

1. Автомобиль, двигавшийся со скоростью 50 м/с, начал тормозить. Чему будет равна его скорость через 1 минуту, если ускорение при торможении равно 0,2 м/с2?

Answer 1

V0=50 м/с

t=60 c

a=-0.2 м/с²

V-?

a=V-Vo /t

V=Vo+at

V=50-0.2*60=38 м/с

Answer 2

Calculation of the Final Velocity

To calculate the final velocity of the car after 1 minute of braking, we can use the equation of motion:

v = u + at

Where: - v is the final velocity - u is the initial velocity - a is the acceleration - t is the time

In this case, the initial velocity (u) is 50 m/s, the acceleration (a) is -0.2 m/s^2 (negative because it represents deceleration), and the time (t) is 1 minute, which is equal to 60 seconds.

Substituting the given values into the equation, we have:

v = 50 + (-0.2) * 60

Calculating this expression, we find:

v = 50 - 12

Therefore, the final velocity of the car after 1 minute of braking will be 38 m/s.