A student throws a set of keys vertically upwards to her sister in a window 4.00 m above. The keys are caught 2 s later by his sister's outstretched hand. Neglect air resistance and assume accele

Question

A student throws a set of keys vertically upwards to her sister in a window 4.00 m above. The keys are caught 2 s later by his sister's outstretched hand. Neglect air resistance and assume acceleration due to gravity $10 m / s^{2}$ to decide which of the following statements is/are correct?

Options:(select one or more)

Answer:

A, C, D

Solution:

$4 = 24 - 5 (2) 2 \Rightarrow u = 12 m / s$

$V = 12 - 2 \times 10 \Rightarrow v = - 8 m / s$

TestHub · Accepted Answer

4 = 24 − 5 ( 2 ) 2 ⇒ u = 12 m / s V = 12 − 2 × 10 ⇒ v = − 8 m / s

Physics - Kinematics Question with Solution | TestHub

Options:(select one or more)

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