Answer:
m = 15.15 kg
Explanation:
Newton's Second Law of motion states that when an unbalanced force is applied on a body, an acceleration is produced in it in the direction of force. The component of force along the horizontal direction here, will be given by the Newton's Second Law as:
Fx = ma
F Cosθ = ma
where,
F = Magnitude of Force = 85 N
θ = Angle with horizontal = 27°
m = mass of object = ?
a = acceleration of object = 5 m/s²
Therefore,
85 N Cos 27° = m(5 m/s²)
m = 75.73 N/5 m/s²
<u>m = 15.15 kg</u>
The correct answer D: all of the above
Use the equation F=ma to solve for the acceleration
Force: 50 N
Mass: 100kg
50=100a
a= .5 m/s/s
Answer: When the cars move up the hill, electric energy changes to kinetic energy and kinetic energy changes to potential energy. Yes, energy entered the system as potential energy.
Explanation:
Answer:
60 sec
3.6 Km
Explanation:
Given that the truck is going at a speed of 36 km/hr =
= 10 m/sec
Given that the car starts at a point 3km=3000 m behind the truck
Initial velocity (u) of the car = 0 m/sec
Acceleration (a) of the car = 2 m/
We know when they meet let the distance travelled by the truck be d Then the distance travelled by the car is d + 3000
For truck


d = 10t
For car

d+3000 = 
10t + 3000 = 
On solving we get t = 60 sec
The car will overtake the truck at 60 sec
The distance travelled by car is
= 3600 m= 3.6 Km