Galileo is considered the father of modern science. Do you agree with this description? Give reasons for your answer.
1 answer:
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Answer:
Toward the north, 300 N
Explanation:
Consider the upward direction as positive and downward direction as negative.
Given:
Mass of the balloon is,
Lift force on the balloon in the upward direction is,
Take acceleration due to gravity as 10 N/kg.
Now, weight of the balloon acting downward is given as the product of its mass and acceleration due to gravity. Therefore,
Weight is,
Now, net force is given as the vector sum of both the forces.
The upward direction is the direction of North. So, the net force acting on the balloon is 300 N towards North.
Answer:
7m/s²
Explanation:
Given parameters:
Velocity at the top = 1m/s
Velocity at the bottom = 36m/s
Time = 5s
Unknown:
Average acceleration = ?
Solution;
Acceleration is the rate of change of velocity with time. It is expressed as;
A =
v is the velocity at the top
u is the velocity at the bottom
t is the time taken
Now, insert the parameters and solve;
A = = 7m/s²