Answer:
The time required by the Athlete to work off 1.00 lb of body fat = 0.296 minute
Explanation:
1 lb of body fat = 4.1 k cal
1 k cal = 4.184 Kilo joule
1 lb of body fat = 4.1 × 4.184 = 17.1544 Kilo joule
Athlete expends 3480 Kilo joule in one hour
⇒ Time required to expand 3480 Kilo joule = 60 minute
⇒ Time required to expand 1 Kilo joule = 
⇒ Time required to expand 17.1544 Kilo joule = × 17.1544 = 0.296 min
Therefore the time required by the Athlete to work off 1.00 lb of body fat = 0.296 minute
Answer:
The weight of an automobile, W = 17640 N
Explanation:
Given that,
The mass of an automobile, m = 1800 Kg
The weight of an object is represented as the gravitational force acting on an object of mass 'm'. It given by the formula
W = m x g newton
Where,
g - acceleration due to gravity.
Substituting the given values in the above equation
W = 1800 Kg x 9.8 m/s²
= 17640 N
Hence, the weight of the automobile, W = 17640 N
Answer:
Less than 18000N
Explanation:
Given
This question will be answered using Newton's third law.
Understanding this law, it implies that reaction force is equal and opposite to the force exerted.
This implies that;
If the force exerted on the ball is 18000N
the force exerted is -18000N
So, the option that answers the question is less than 18000N because -18000N < 18000N
#A
Mass=4.4kg
acceleration=-1.74m/s^2
Use newtons second law
#B
initial velocity=u
Final velocity=v=0
Acceleration=a=-1.74m/s^2
Time=t=1.27s
