Question

Мяч брошен со скоростью 5 м/с вертикально вверх. Через сколько времени он достигнет верхней точки ? Ускорение свободного падения принять равным 10 м/с квадратных.

Answer 1

Дано           V=0     V0=5 м/с     t - ?

V=Vo-g*t

t=Vo/g=5/10=0,5 с

Ответ t= 0/5 с

Answer 2

Calculation of Time to Reach the Highest Point

To calculate the time it takes for the ball to reach the highest point, we can use the equation of motion for vertical motion:

v = u + gt

Where: - v is the final velocity (which is 0 at the highest point) - u is the initial velocity (given as 5 m/s) - g is the acceleration due to gravity (given as 10 m/s^2) - t is the time

Since the final velocity is 0 at the highest point, we can rearrange the equation to solve for time:

t = (v - u) / g

Substituting the given values into the equation:

t = (0 - 5) / 10

Simplifying the equation:

t = -5 / 10

The negative sign indicates that the ball is moving in the opposite direction of the positive direction (upwards). However, time cannot be negative, so we take the absolute value of the result:

t = 0.5 seconds

Therefore, it takes 0.5 seconds for the ball to reach the highest point.