Momentum refers the amount of motion that a moving object contains. It is calculated from the product of the mass and the velocity of an object. It has SI units of kg-m/s. We calculate as follows:
momentum = mass x velocity
momentum = 0.45 kg x 25 m/s
momentum = 11.25 kg-m/s
Equal charges repel each other;
Different charges attract each other;
If the object is repelled by a positively charged rod, the object is positively chaeged too.
Answer: The object has positive charge.
About 56 mph only for this tho it’s only for this one tho
Answer:
D. 4 m/s²
Explanation:
Given;
initial velocity of the car, u = 0
distance traveled by the car, s = 18 m
time of motion of the car, t = 3.0 s
The magnitude of the car's acceleration is given by;
s = ut + ¹/₂at²
s = 0 + ¹/₂at²
s = ¹/₂at²
2s = at²
a = 2s / (t²)
a = ( 2 x 18) / (3²)
a = 4 m/s²
Therefore, the magnitude of the car's acceleration is 4 m/s²