Answer:
m = 40.8 [kg]
Explanation:
We know that weight is defined as the product of mass by gravitational acceleration in this way we have the following equation.
where:
W = weight [N] (units of Newtons)
m = mass [kg]
g = gravity acceleration = 9.8 [N/kg]
Therefore:
Explanation:
It is given that,
Mass of the truck, m = 2000 kg
Initial velocity of the truck, u = 34 km/h = 9.44 m/s
Final velocity of the truck, v = 58 km/h = 16.11 m/s
(a) Change in truck's kinetic energy,
(b) Change in momentum of the truck,
Hence, this is the required solution.
Force, newtons 3rd law of motion stated for every action there is an equal and opposite reaction
By using the second law of Newton, the frictional force is 200N.
We need to know about the second law of Newton (force) to solve this problem. The total force applied an object is proportional to the mass of object and acceleration. It can be defined as
∑F = m . a
where F is force, m is mass and a is acceleration.
From the question above, we know that
F1 = 200N
v = constant therefore (a = 0 m/s²)
By using second law of Newton, we get
∑F = m . a
F1 - Ffriction = m . 0
200 - Ffriction = 0
Ffriction = 200 N
Hence, the frictional force is 200N.
Find more on force at: brainly.com/question/25239010
#SPJ4
Answer:
t = 1min
Explanation:
count how many footballs there are