I think it’s d because it talks about a spring with is common like the spring in a pen
You need to know the formula:
25 = 1/2 * g * t^2
t = √(50/g) = 2.258 s, where I use g = 9.8 m/s^2
Answer:
C
Explanation:
Foot-in-the-door technique is a compliance tactic that aims at getting a person to agree to a large request by having them agree to a modest request first
<u>Answer:</u> The momentum of the car is 16000 kg.m/s
<u>Explanation:</u>
Momentum is defined as the force that keeps the object moving. It is also defined as the product of mass and velocity of an object.
Mathematically,

where,
p = momentum of the car = ?
m = mass of the car = 800 kg
v = velocity of the car = 20 m/s
Putting values in above equation, we get:

Hence, the momentum of the car is 16000 kg.m/s
Current = voltage/resistance = 36/4000 = 0.009 amperes or 9 milliamps, whichever you prefer.