Answer:
1.) 1620 km/h^2
2.) 2.7 km
Explanation:
1.) Given that the car start from rest. The initial velocity U will be equal to zero. That is,
U = 0.
Final velocity V = 54 km/h
Time t = 2 minute = 2/60 = 1/30 hour
Acceleration a will be change in velocity per time taken. That is,
a = ( V - U )/ t
Substitute V, U and t into the formula
a = 54 ÷ 1/30
a = 54 × 30 = 1620 km/h ^2
2.) Distance travelled S by the car during the time can be calculated by using the 2nd equation of motion.
S = Ut + 1/2at^2
Substitute all the parameters into the formula
S = 54 × 1/30 + 1/2 × 1620 × (1/30)^2
S = 54/30 + 810 × 1/900
S = 54/30 + 810/900
S = (1620+810)/900
S = 2430/900
S = 2.7 km.
Therefore, distance travelled by the car during this time is 2.7 km
Answer:
the answer for your question is false ( F )
Answer:
The speed of the vehicle changes in each second is, v = 0.00111 Km/h
Explanation:
Given,
The acceleration of the vehicle, a = 4 Km/h²
Converting it into m/s,
a = 0.0003086 m/s²
In each second the vehicle covers 0.0003086 m
The speed of the vehicle in each second is given by 0.0003086 m/s
Converting it into Km/h
v = 0.00111 Km/h
Therefore, the speed of the vehicle changes in each second is, v = 0.00111 Km/h
Answer:
The process of making alloys involves ( Heating ) pure metals to remove impurities. Then the pure metals are(mixed) with other components. An alloy is a mixture of metals or a mixture of a metal and another element. Alloys are defined by a metallic bonding character.
Explanation:
