Question

Автомобиль массой m=1600кг трогается с места и за промежуток времени t=10 с достигает скорости v=15 метров в секунду.Какую кинетическую инергию приобрел автомобиль?

Answer 1

Ek=mv^2/2 (тут и умножить на t)=
(1600*10*225)/2=1800000 Дж

Answer 2

Calculation of Kinetic Energy

To calculate the kinetic energy acquired by the car, we can use the formula:

Kinetic Energy (KE) = (1/2) * mass * velocity^2

Given: - Mass of the car (m) = 1600 kg - Time taken (t) = 10 s - Final velocity (v) = 15 m/s

Using the given values, we can calculate the kinetic energy acquired by the car.

Step 1: Calculate the kinetic energy using the formula mentioned above.

Step 2: Substitute the values into the formula.

Step 3: Solve the equation to find the kinetic energy.

Let's perform the calculations:

Step 1: Calculate the kinetic energy using the formula: KE = (1/2) * m * v^2

Step 2: Substitute the values into the formula: KE = (1/2) * 1600 kg * (15 m/s)^2

Step 3: Solve the equation to find the kinetic energy: KE = (1/2) * 1600 kg * 225 m^2/s^2

Now, let's calculate the value:

KE = 180,000 Joules

Therefore, the car acquires a kinetic energy of 180,000 Joules.