Answer:
Weight of body = 490 Newton
Explanation:
Mass of the body is the total amount of matter contained in the body but Weight of the body is the force exerted by gravity on the body. Weight of the body depends upon acceleration due to gravity of the planet.
Thus,
Weight = mass × acceleration due to gravity
W = mg
W = weight of the body
m = mass of the body
g = acceleration due to gravity
W = 50 × 9.8
W = 490
W = 490 Newton
Hence, weight of the body is 490 Newton.
Answer:
The chair will accelerate to the right.
Explanation:
As we know by Newton's Law that when some net unbalanced force is exerted on the system then it will accelerate in the direction of force and the equation is given as
now we know that 6 N force is exerted on the chair towards right
So here the chair will accelerate in the direction of net force
so correct answer is given as
The chair will accelerate to the right.
Answer:
M = 0.115 kg
Explanation:
given,
mass of arrow = 120 g = 0.12 Kg
speed of arrow before it strike apple = 29.7 m/s
distance traveled by the arrow stick combination = 9.30 m
height of the son = 1.85 m
weight of the apple = ?
now,
time of flight of arrow and apple combination
using equation of motion
t = 0.614 s
s = 15.15 m/s
using conservation of momentum
m v = (M+ m) s
0.12 x 29.7 = (M+ 0.12) x 15.15
M+ 0.12 = 0.235
M = 0.115 kg
mass of apple is equal to 0.115 Kg