Answer:
Explanation:
Kinetic energy is given by the following equation:
, where is mass in and is velocity in .
Since the cell phone's mass is given in grams, we need to convert this into kilograms:
.
Therefore, the kinetic energy of the cell phone is:
.
Answer: 3,383.5 kg
Explanation:
from the question we were given the following
tension (T) = 4.5 x 10^4 N
maximum acceleration (a) = 3.5 m/s^2
acceleration due to gravity (g) = 9.8 m/s^2 ( it's a constant value )
mass of the car and its contents (m) = ?
we can get the mass of the car and it's contents from the formula for tension which is T = ma + mg
T = m (a + g)
therefore m = T / (a+g)
m = (4.5 x 10^4 / ( 3.5 + 9.8 )
m = 3,383.5 kg
Answer:
a = m/s²
Explanation:
Acceleration (a) = (final velocity - initial velocity) ÷ (final time - initial time) =
Converting the speed from km/h to m/s;
100 km = 100000m
1hr = 3600s
∴ 100km/hr ⇄ =
Acceleration = = m/s²
i.e deceleration = m/s²
Answer:
The acceleration of the object is 5 m/.
Explanation:
From the Newton's second law we can add an equation as:
F= ma.........................................1
where, f= force
m= mass of object
a= acceleration of object
We are given net force as 7500 N, mass as 1500 kg so insert the value in equation 1, we get
7500 N = 1500 × a
or, a=
or, a= 5 m/
Hence the acceleration of the truck is 5 meter per second square.