Answer:
28.7m
Explanation:
Given parameters;
Work done = 430J
Force applied = 15N
Unknown:
Distance moved = ?
Solution:
Work done is the force applied to move a body through a certain distance.
Work done = Force x distance
So;
430 = 15 x distance
Distance = 28.7m
Answer:
5m/s²
Explanation:
The force exerted on an object is calculated using the formula ;
F = ma
Note that the upward force (F) is 148N
Where;
F = force (N)
m = mass (kg)
a = acceleration (m/s²)
The downward force towards gravity is F' = mg
F' = 10 × 9.8m/s²
F' = 98N
Net force (F - F') = m × a
148 - 98 = 10 × a
50 = 10a
a = 50/10
a = 5m/s²
Newton's first law of motion predicts the action of objects for which all existing forces are balanced. The first law, also referred to as the law of inertia, states that if the forces acting upon an object are balanced, the acceleration of that object will be 0 m/s/s. Objects at equilibrium will not accelerate. According to the law, an object will only accelerate if there is an unbalanced force acting upon it. The presence of an unbalanced force will change its speed, its direction, or both its speed and direction. All forces retaining to this law are related to inbalance
