Mike pushes a box with a force of 30 N forward, but the box resists with a force of 10N in the other direction. what is the net
1 answer:
You might be interested in
Answer:
t = 3 minutes
Explanation:
Given that,
Power of fan, P = 50 W
Energy used, E = 1 kWh
We know that,
Energy = Power/time
As, 50 watts = 0.05 kilowatts
So,
or
t = 3 min
So, the required time is equal to 3 minutes.
Given problem;
To this problem, we are going to apply Newton's second law of motion.
Mathematically it is expressed as;
F = ma
where F is the force , m is the mass and a is the acceleration
1.- When applying a force of 60 Newtons on a body, an acceleration of 4 m / s2 is produced, calculate the value of its mass.
Given parameters:
Force = 60N
Acceleration = 4m/s²
Unknown:
Mass = ?
Solution:
Force = mass x acceleration;
Input the parameters and solve;
60 = mass x 4
mass = = 15kg
2.- What will be the acceleration produced on a body of mass equal to 50 kilograms when applying a force of 250 newtons to it?
Given parameters:
Mass = 50kg
Force = 250N
Unknown:
Acceleration = ?
Solution:
Force = mass x acceleration
250 = 50 x acceleration
Acceleration = = 5m/s²
3.- What will be the force that must be applied on an 80 kilogram block to produce an acceleration of 2.5 m / s2?
Given parameters;
Mass = 80kg
Acceleration = 2.5m/s²
Unknown:
Force = ?
Solution:
Force = mass x acceleration
Force= 80 x 2.5 = 200N
4.- When applying a force of 800 newtons to a car with a mass of 1500 kilograms produces a slight acceleration, what is the value of the acceleration?
Given parameters:
Force = 800N
Mass = 1500kg
Unknown:
acceleration = ?
Solution:
Force = mass x acceleration
800 = 1500 x acceleration
acceleration = = 0.53m/s²
5.- A rock has a mass of 500 kilograms and to move it a force of 100 newtons is applied. What is the value of its acceleration?
Given parameters:
Mass = 500kg
Force = 100N
Unknown:
Acceleration = ?
Solution:
Force = mass x acceleration
100 = 500 x acceleration
Acceleration = = 0.2m/s²