1. A wave with a frequency of 14 Hz has a wavelength of 3 meters. At what speed will this
wave travel?

Question:

A cannon is fired at  

30

∘

above the horizontal with a velocity of  

200

m

s

from the edge of a  

125

m

high cliff. Calculate where the cannonball lands on the level plain below.

Projectile Motion:

An object or particle that is thrown near the Earth's surface experiences a projectile motion and creates a parabolic path. Its velocity at each point or time t is expressed as the sum of horizontal and vertical components. The horizontal velocity is constant while the velocity along the y-axis is affected by the gravity.

Answer and Explanation:

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We know that the velocity along the x-axis is constant and the total horizontal distance traveled is  

x

=

v

o

cos

θ

t

. Here, the time t i...

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