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A jet is taking off. It is moving at 10.00 km per h and accelerates to 1000 km per h2 for 30.0s what is the final speed at the end of the 30.0s?
Wiki User
∙ 14y ago
30 sec = (30/3600) hour Change in speed = (1000 km/hr2) x (30/3600 hr) = 8-1/3 km/hr Final speed = (initial speed) + (change in speed) = (10) + (8-1/3) = 18-1/3 km/hr.
Wiki User
∙ 14y ago
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I presume that you mean 'An object travelling initally at 10m/s, accelerates at 4m/s2 for 8s; what is its final speed? If it is accelerating at 4 m/s2, it gains 4m/s every s v= u + at where v is the final speed, u is the initial speed, a is the acceleration and t is the time v = 10 + 4(8)= 42 m/s
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A car moving at 10ms is accelerated at a rate of 5ms2 over a 4 second period What would the speed be after 3 seconds?
I presume that you mean 'An object travelling initally at 10m/s, accelerates at 4m/s2 for 8s; what is its final speed? If it is accelerating at 4 m/s2, it gains 4m/s every s v= u + at where v is the final speed, u is the initial speed, a is the acceleration and t is the time v = 10 + 4(8)= 42 m/s
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