Answer:
u₂ = 3.7 m/s
Explanation:
Here, we use the law of conservation of momentum, as follows:
where,
m₁ = mass of the car = 1250 kg
m₂ = mass of the truck = 2020 kg
u₁ = initial speed of the car before collision = 17.4 m/s
u₂ = initial speed of the tuck before collision = ?
v₁ = final speed of the car after collision = 6.7 m/s
v₂ = final speed of the truck after collision = 10.3 m/s
Therefore,
<u>u₂ = 3.7 m/s</u>
Answer:
Explanation:
a ) Velocity vs time graph will be a straight line with negative slope , making a slope of 2 because slope of v-t graph gives the value of acceleration.
b ) v = 0 , u = 28 m/s
t = ?
v = u - at
0 = 28 - 2 t
t = 14 s
shuttle velocity will become zero after 14 sec.
c ) v ² = u² - 2 a s
0 = 28² - 2 x 2 x s
s = 28² / 4
= 196 m .
Explanation:
There are 3.28 feet in a meter.
1100 ft/s × (1 m / 3.28 ft) ≈ 335 m/s
Round as needed.
<span>An endothermic reaction takes heat from it's environment. When you increase the temperature of the environment in which the endothermic reaction is taking place, the forward reaction will be favored and more products will form. The answer is B.</span>