Longer I took a little physics but I remember them saying that a small star lasts longer than a larger star
Answer:
the velocity of the mass is 8.44 m/s
Explanation:
Given;
mass of the object, m = 2 kg
spring constant, k = 180 N/m
extension of the spring, x = 0.89 m
The maximum velocity of the mass is calculated as follows;
By the principle of conservation of energy;
Elastic potential energy = kinetic potential energy
¹/₂kx² = ¹/₂mv²
kx² = mv²

Therefore, the velocity of the mass is 8.44 m/s
Answer:
I will answer this in English.
He has 45 years.
a year has 365 days.
a day has 24 hours.
So he has:
45*365*24 hours = 394,200 hours.
His mass is 78 kg,
And we know that 1 slug = 1lbf*ft/s^2
Then, the first step is transform the 78 kg into lbf.
1kg = 2.2 lbf.
then 78kg = 78*2.2 lbf = 171.6lbf.
Now, the weight is m*g, where m is the mass and g is the gravitational acceleration, in this case the gravitational acceleration in ft/s^2 is:
g = 32.2 ft/s^2
Then the weight in slugs is:
W = 32.2ft/s^2*171.6lbf = 5,525.5 slugs
Answer:
Option A
The drag force goes up by a factor of 4
Explanation:
Fact:
Drag force is directly proportional to the square of the velocity of a moving object
Therefore, when drag force pushes opposite to the motion as one rides a bicycle, the magnitude of drag force increases by a factor of 4
Answer:
The final velocity of the race car is 27.14 m/s
Explanation:
Given;
initial velocity of the race car, u = 18.5 m/s
acceleration of the race car, a = 2.47 m/s²
distance covered by the race car, s = 79.78 m
Apply the following kinematic equation to determine the final velocity of the race car.
v² = u² + 2as
v² = (18.5)² + 2(2.47)(79.78)
v² = 736.363
v = √736.363
v = 27.14 m/s
Therefore, the final velocity of the racecar is 27.14 m/s