there is procedure. please give me each questions. S. A football is thrown up at

Question

there is procedure. please give me each questions.

S. A football is thrown up at a 35 anele to the horizontal. What must be the initial velocity of is thrown the ball if its range is to be 45 m? ne water reached by up at a 35 angle to the horizontal. What must be the initial velocity of Procedure 1. Determine the velocity v with which the projectile will fall when it comes off the table top lo do this let the ball roll down the ramp and roll a distance d in time t. How many times should you do this step? Also keep the proper number of significant figures in your readings 2. Knowing the velocity of the ball as it leaves the table, calculate where it should land. Get your prediction checked by the instructor Hint: Write the data you have and the data you can find out in horizontal and vertical terms. Then use the appropriate equations of motion to determine where th Then use the appropriate equations of motion to determine where the ball will land. LASH 3. Remove the brown sheet from the ditto stencil, and tape it to the floor so that the impact trom the projectile will make a carbon mark on the white paper. Mark on the stencil where you expect the ball to land. Do this step at least three times. down all the steps followed to make your prediction. Present your experimental and ion 4. Roll the projectile down the ramp and see where it lands. How close was your prediction? ifuge in the 5. Before you forget what your numbers signify, it would be a good idea for you to write was sup- h angular requiresa predicted data in a table and show your calculations clearly t the cor 6. Calculate the % error between your predicted and actual values. ground h ball at niform 7. 2425: Repeat the experiment with the projectile starting from the middle of the ramp. Make your prediction, and show three experimental trials. Leaming

Explanation / Answer

1) horizontal velocity = vx

vertical velocty = vy

magnitude of resultant velocity = sqrt(vx^2 + vy^2)

2) angle = tan^-1(vy/vx)

4) range :   R = v^2 sin2@ / g

here v and g are constant.

only @ is changing.

sin2@ lies in between -1 to 1.

so maximum value sin2@ can get is 1.

hence R will be max when sin2@ = 1

2@ = 90 deg

@ = 45 deg

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.