Question

Alessandra jumps on a trampoline. It takes her 1 second to reach a height of 2 feet above the trampoline. What is the speed of Alessandra's motion? A. 2 ft/s B. 0.5 ft/s C. 2 ft/s up D. 0.5 ft/s down

Answer 1

Q-Alessandra jumps on a trampoline. It takes her 1 second to reach a height of 2 feet above the trampoline. What is the speed of Alessandra's motion?

A. 2 ft/s

B. 0.5 ft/s

C. 2 ft/s up ✓

D. 0.5 ft/s down

${\huge{\fbox{\color{blue}{Answer \: :→ \: C. 2 ft/s up}}}}$

$\huge\sf\pink{Given,}$

→Time = 1 sec

→Height = 2 feet

${\ \: {\fbox{\color{pink}{We need to calculate the speed of Alessandra’s motion}}}}$

$\huge\sf\pink{✓Using \: formula \: of \: speed}$

$v\ = \frac{d}{t}$

$\huge\sf\pink{✓Where, v = speed}$

→d = height

→t = time

$\huge\sf\pink{✓Put \: the \: value \: into \: the \: formula}$

$v \ = \frac{2}{1}$

$\sf\green{v = 2 ft/s}$

→The direction will be up ward.

${ {\fbox{\color{red}{Hence, The speed of Alessandra's motion is 2 ft/s up.}}}}$

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