A 50 kg mass is sitting on a frictionless surface. A 200N force pushes the mass for 8.2 seconds until the mass reaches the desired velocity. Calculate the impulse in N.s. Only put in the numerical value. Answer to 1 decimal place and do not write the unit in your answer.

Question

BlackTom AI · Accepted Answer

The problem asks for the impulse when a constant force is applied for a certain time. 
First, recall that impulse J is defined as J = F × Δt, where F is the force and Δt is the time interval during which the force acts. 
In this scenario, F = 200 N and Δt = 8.2 s. 
Compute the product: 200 × 8.2 = 1640.0. 
Since the instruction specifies that the answer should be a numerical value with one decimal place and without the unit, the result to one decimal place is 1640.0. 
Additionally, note that this impulse also equals the change in momentum Δp, which would be m Δv for a mass m = 50 kg if you choose to verify via momentum, but the direct impulse computation here is straightforward because the force is constant over the known interval. 
If the force had varied, you would integrate F dt over the interval, but with a constant 200 N force, the simple product suffices. 
Be mindful that the problem emphasizes delivering only the numeric value, and you should ensure the final numeric value reflects the required decimal precision.

A 50 kg mass is sitting on a frictionless surface. A 200N force pushes the mass for 8.2 seconds until the mass reaches the desired velocity. Calculate the impulse in N.s. Only put in the numerical value. Answer to 1 decimal place and do not write the unit in your answer.

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A 50 kg mass is sitting on a frictionless surface. A 200N force pushes the mass for 8.2 seconds until the mass reaches the desired velocity. Calculate the impulse in N.s. Only put in the numerical value. Answer to 1 decimal place and do not write the unit in your answer.

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类似问题

Which of the following is a correct definition of *impulse* in physics?

A 50 kg mass is sitting on a frictionless surface. A 157N force pushes the mass for 4.2 seconds until the mass reaches the desired velocity. Calculate the impulse in N.s. Only put in the numerical value. Answer to 1 decimal place and do not write the unit in your answer.

The change in an object’s momentum is equal to

Which force-time curve has the smaller impulse, A or B?

A golf club exerts a force of 462 N on a golf ball ball for 18 ms. What impulse is given to the ball? Give your answer to one decimal place.

What is the impulse received by a ball of mass 0.5 kg that changes its velocity by 28 m s-1? Give your answer to the nearest whole number.

A tennis racquet exerts a force of 133 N on a ball for 0.035 s. What impulse is given to the ball? Give your answer to one decimal place.

What impulse is needed for a plane mass 78 tonne to change its velocity by 65 m s-1? Give your answer to the nearest whole number.

更多留学生实用工具

希望你的学习变得更简单

Which of the following is a correct definition of impulse in physics?