Answer:
F=23N
Explanation:
The net force applied on the suitcase is the sum of the force F the man applies, the friction, the weight and the normal from the ground. We need only to look at the horizontal component of the forces to solve the question asked. On the horizontal, the net force would be the horizontal component of F minus the frictional force f, which always opposes movement (all the other forces are on the vertical component). So we have:
We now apply Newton's second Law on the horizontal:
And we calculate the horizontal component of F as 
, so we have
And to solve for F we do:
And substitute our values:
The correct answer is - Positive acceleration describes an increase in speed; negative acceleration describes a decrease in speed.
Answer:
C ) 1500 Joules
Explanation:
In the attached image, we can see how the box was moved 10 meters by the force of 150 N.
The definition of work is W = F * d
therefore
W= 150*10 = 1500 J
A halogen atom gives off lots of energy.
The Thrust on the rocket is 1.434 MN.
To calculate the thrust of a rocket, we use the formula below
Thrust: This is the force that moves an aircraft through the air.
⇒Formula
- T = M'×v.................... Equation 1
⇒ Where:
- T = Thrust of the rocket
- M' = Fuel ejection rate
- v = gas exhaust velocity
From the question,
⇒ Given:
- M' = 239 kg/s
- v = 60 km/s = 6000 m/s
⇒ Substitute these values into equation 1
- T = 239(6000)
- T = 1434000 N
- T = 1.434 MN
Hence, the Thrust on the rocket is 1.434 MN.
Learn more about Thrust here: brainly.com/question/13501791
