C. The downward component of the projectile’s velocity is continually increasing Explanation: The motion of a projectile consists of two independent motions:
– A uniform movement (at constant speed) along the horizontal direction
– A uniformly accelerated movement, with a constant acceleration (equal to the acceleration of gravity) downwards
Here, we want to study the downward component of the projectile’s velocity. Since vertical motion is uniformly accelerated motion, the vertical velocity is given by: where u = 0 is the initial vertical velocity (zero since the projectile is fired horizontally) down is the acceleration of gravity t is time So the equation becomes This means that C The downward component of the projectile’s velocity is continuously increasing because every second it is increasing downward. Learn more about projectile movement: #LearnwithBrainly
Explanation: projection velocity = v projection angle = θ When the ball is at maximum height, its vertical component of velocity is zero, so it only has the horizontal component of velocity at the highest point. velocity at the highest point = vo Cos θ The acceleration acting on the ball is simply the acceleration of gravity always acting vertically downward. The acceleration of the ball at the highest point is therefore g.
Option E is correct. There must be a horizontal wind opposite the direction of movement of the stone, because ignoring air resistance when calculating the horizontal span would result in a value greater than 32 m. Explanation: Normally, ignoring air resistance, for projectile motion, the range (horizontal distance divided) of motion is given by R = (u² sin 2θ)/g where u = projectile initial velocity = 20 m /s θ = angle above the horizontal at which the projectile was launched = 30° g = acceleration due to gravity = 9.8 m/s² R = (30² sin 60°) ÷ 9.8 R = 78 .53 m So, normally, the stone must travel a horizontal distance of 78.53 m . So traveling a horizontal distance of 32m (less than half of what the range should be without air resistance) means that the movement of the stone has been impeded, so option E is correct. There must be a horizontal wind opposite the direction of movement of the stone, because ignoring air resistance when calculating the horizontal span would result in a value greater than 32 m. I hope this helps you!!!
Yes 25.7677 is momentum
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