A dragster accelerates to a speed of 11m/s over a distance of 398m . D

1.	A dragster accelerates to a speed of 11m/s over a distance of 398m . Determine the acceleration (assumed uniform) of the dragster
Answer» Given : ▪ Initial velocity = zero ▪ Final velocity = 11m/s ▪ Distance travelled = 398m To Find : ▪ ACCELERATION of dragster. Concept : ☞ In this question, Acceleration has said to be uniform throughout the motion, we can EASILY APPLY third equation of KINEMATICS to solve this question. ✴ Third equation of kinematics : ↗ v² - u² = 2as where, ▪ v denotes final velocity ▪ u denotes initial velocity ▪ a denotes acceleration ▪ s denotes distance Calculation : → v² - u² = 2as → (11)² - (0)² = 2a(398) → 121 = 796a → a = 121/796 → a = 0.15m/s²

A dragster accelerates to a speed of 11m/s over a distance of 398m . Determine the acceleration (assumed uniform) of the dragster

Answer»

Given :

▪ Initial velocity = zero

▪ Final velocity = 11m/s

▪ Distance travelled = 398m

To Find :

▪ ACCELERATION of dragster.

Concept :

☞ In this question, Acceleration has said to be uniform throughout the motion, we can EASILY APPLY third equation of KINEMATICS to solve this question.

✴ Third equation of kinematics :

↗ v² - u² = 2as

where,

▪ v denotes final velocity

▪ u denotes initial velocity

▪ a denotes acceleration

▪ s denotes distance

Calculation :

→ v² - u² = 2as

→ (11)² - (0)² = 2a(398)

→ 121 = 796a

→ a = 121/796

→ a = 0.15m/s²

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