Question

Formula 1 race car accelerates with a speed of 105 km per hour in the first 15 minutes and then moves at 212 km per hour in the next 20 minutes find the distance travelled by the car

Answer 1

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✭ ӇЄƦЄ ƖƧ ƳƠƲƦ ƛƝƧƜЄƦ ✭
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⛆Sᴘᴇᴇᴅ 1 ➾ 105 Kᴍ /ʜʀ
⛆Tɪᴍᴇ 1 ➾ 15 ᴍɪɴ = 0.25 ʜʀꜱ

⛆Sᴘᴇᴇᴅ 2 ➾ 212 Kᴍ / ʜʀ
⛆Tɪᴍᴇ 2 ➾ 20 ᴍɪɴ = 0.3 ʜʀꜱ

➠Dɪꜱᴛᴀɴᴄᴇ = Sᴘᴇᴇᴅ × Tɪᴍᴇ

Tᴏᴛᴀʟ Dɪꜱᴛᴀɴᴄᴇ➾ (S1 × T1) + (S2 × T2)

➾ (105 × 0.25) + (212 × 0.3)
➾ (26.25) + (63.6)
➾ (26.25 + 63.6)

➾ 89.85 Kᴍ...✔