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Swali hili linauliza kuhusu nishati ya kinetic. Swali la Saba Kiasi cha nishati ya kinetic ya kitu chenye uzito wa 2kg kinachotembea kwa kasi ya 20m/s ni: a) 400 b) 200 c) 100 d) 50 Jibu sahihi ni a). Step 1: Andika formula ya nishati ya kinetic. Nishati ya kinetic (KE) inatolewa na formula: KE = (1)/(2)mv^2 ambapo m ni masi na v ni kasi. Step 2: Badilisha thamani za masi na kasi kwenye formula. Masi (m) = 2 kg Kasi (v) = 20 m/s KE = (1)/(2) × (2 kg) × (20 m/s)^2 Step 3: Kokotoa thamani ya nishati ya kinetic. KE = (1)/(2) × 2 kg × (400 m^2/s^2) KE = 1 kg × 400 m^2/s^2 KE = 400 J Nishati ya kinetic ni 400 J. Step 4: Linganisha na majibu yaliyotolewa. Thamani iliyokokotolewa inalingana na chaguo (a). a) 400 That's 2 down. 3 left today — send the next one.