Aprojectile fired from a gun has initial horizontal and vertical components of velocity equal to 30 m/s and 40 m/s, respectively. what is the speed of the projectile when it is at the highest point in its trajectory

The speed of the projectile when it is at the highest point in its trajectory is of 30 m/s.

What is projectile motion?

The motion of any object at an instant when it is subjected to only the acceleration due to gravity is known as projectile motion.

Given data -

The initial horizontal component of velocity is, u = 30 m/s.

The initial vertical component of velocity is, u' = 40 m/s.

At the highest point of the trajectory, the vertical component of the projectile's velocity is zero (u' = 0), while the horizontal component is still the initial one (u = 30 m/s). Therefore, the speed of the projectile at its highest point is exactly 30 m/s.

Thus, we can conclude that the speed of the projectile when it is at the highest point in its trajectory is of 30 m/s.

Learn more about the projectile motion here:

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answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg