Answer:
She pulled the scarf from her neck and wiped her face.
Answer:
Staying the same unless, another force acts upon it
Explanation:
An object will stay still or keep moving at the same pace and in a straight line until acted upon by an external force that is unbalanced.
Answer:
Option D
48 N
Explanation:
From Newton's law of motion we deduce that the magnitude of force is a product of mass and acceleration hence expressed as, F=ma where F is the magnitude of force, m is the mass of the object and a is the acceleration of the cart. Substituting 24 kg for m and 2 for acceleration then
F=24*2= 48 N
Answer:
The speed of motorboat in still water = 42.67 km / h
Explanation:
Let speed of motorboat = u
speed of current = v
Then upstream speed = u - v
Negative sign is due to that the current and motorboat directions are opposite.
And downstream speed = u + v
Distance traveled by motorboat in upstream = 96 km
Time taken = 3 hours
Then upstream speed (u - v) = = 32 km / h ---------------- (1)
Distance traveled by motorboat in downstream = 160 km
Time taken = 3 hours
Downstream speed (u - v) = km / h = 53.34 km / h -------------------------- (2)
By adding equations (1) & (2), we get
⇒ 2 u = 32 + 53.34
⇒ 2 u = 85.34
⇒ u =
⇒ u = 42.67 km / h
Thus the speed of motorboat in still water = 42.67 km / h
The really good answer is 30cm CER format