Answer:
the unit of velocity is meter per second
Answer:
The rate at which temperature changes is proportional to the rate at which heat is transferred.
Explanation:
The temperature of a sample changes more rapidly if heat is transferred at a high rate and less rapidly if heat is transferred at a low rate
Answer:
The mass of the hailstone is 
Explanation:
From the question we are told that
The mass of the hockey puck is 
The initial speed of the puck is 
The final speed of the puck is 
According to the principles of linear momentum
At initial the velocity of the hailstone was zero so
So
substituting values
=> 
=> 
=>
Tennis ball will move with 1/3 th velocity of plastic ball
Answer:
P = 2161 N
Explanation:
For this exercise, let's start with Newton's second law
P - W = m a
P = ma + W
Where P is the fin force, W the weight,
Let's look for the vertical acceleration of the fish, this goes from a vertical speed of zero to a speed of 6.20 m / s when it has traveled half its length 1.50
y = 0.75 m
v² = v₀ + 2 a y
a = v² / 2 y
a = 6.20²/2 0.75
a = 25.63 m / s
We substitute in Newton's second law
P = m (g + a)
Let's calculate
P = 61.0 (0 9.8 + 25.63)
P = 2161 N
