Answer:
(1). This motion is projectile motion.
(2). The horizontal initial velocity is 19.3 m/s.
The vertical initial velocity is 22.9 m/s.
(3). The time is 3.9 sec.
(4). The range of the ball assuming the ground is flat and horizontal is 90.4 m.
Explanation:
Given that,
Angle = 40°
Velocity = 30 m/s
(1). A soccer ball is kicked at an angle from the ground at a speed of 30 m/s.
So, this motion will be projectile motion.
(2). We need to calculate the vertical and horizontal components of the initial velocity of the ball
Using formula of vertical initial velocity
Put the value into the formula
Horizontal initial velocity ,
Put the value into the formula
(3). We need to calculate the time
Using formula of time
Put the value into the formula
(4). We need to calculate the range of the ball assuming the ground is flat and horizontal
Using formula of range
Put the value into the formula
Hence, (1). This motion is projectile motion.
(2). The horizontal initial velocity is 19.3 m/s.
The vertical initial velocity is 22.9 m/s.
(3). The time is 3.9 sec.
(4). The range of the ball assuming the ground is flat and horizontal is 90.4 m.