Answer:
94.8 m
Explanation:
The motion of the bike is a uniformly accelerated motion (=constant acceleration), so we can use the following suvat equation:
where:
s is the distance covered
u is the initial velocity
v is the final velocity
t is the time elapsed
For the bike in this problem, we have:
u = 4.3 m/s is the initial velocity
v = 11.5 m/s is the final velocity
t = 12 s is the time
Solving for s, we find the length of the hill:
The answer is d) The 1.5 kg ball because it has more momentum.
Momentum = Impulse = Mass + Velocity
= 2 * 10 = 20 kg*m/s
= 1.5 * 20 = 30 kg*m/s
hence the 1.5 kg ball has greater momentum and impulse.
Source: http://forumvu.com/Thread-GSC101-Assignment-1-Solution-Fall-2017
The mass is m = 3kg
The acceleration is a = 2m/s/s
Force is equal to mass times acceleration
F = m*a = 3kg*2m/s/s = 6 N
This force is equal to the tension in the string
T = 6 N
Answer:
Sound is produced when an object vibrates, creating a pressure wave. This pressure wave causes particles in the surrounding medium (air, water, or solid) to have vibrational motion. As the particles vibrate, they move nearby particles, transmitting the sound further through the medium. The human ear detects sound waves when vibrating air particles vibrate small parts within the ear.
In many ways, sound waves are similar to light waves. They both originate from a definite source and can be distributed or scattered using various means. Unlike light, sound waves can only travel through a medium, such as air, glass, or metal. This means there’s no sound in space!
Explanation:
