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A stone was thrown with velocity 20m/s at an angle of 30 degrees from a height h. The stone moves under gravity freely and reaches the floor 5s after thrown. a) Find H, b)the horizontal distance covered

To find the height we first need to find the initial vertical velocity of the stone. This will be equal to 20 * sin(30) = 20 0.5 = 10m/s. From here we can use SUVAT. In this case s=-h,u=10m/s, v is unknown, ...
DH
Answered by Dominic H. • Maths tutor
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How would I approach an 8 mark question that asks how useful 2 sources are for a particular enquiry?

This is a typical example of a skill that examiners like to ask - for some exam boards it'll be mandatory that this question comes up and that means you can easily prepare a structure to aid you when you get...
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Answered by Ella M. • History tutor
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Find y and x of the to following equations: x +3y = 11 and x + 2y = 9.

This question can be solved using the elimination method. Set out the problem as follows: x+3y=11 - x+2y=9 0+y=2 => y=2 Therefore one can substitute the value of y obtained in to any one of the two eaquat...
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Answered by Munisha B. • Maths tutor
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Outline Bowlby's theory of infant attachment (6 marks)

Bowlby studied infant attachment systems and was a key figure in developmental psychology. As an evolutionary psychologist he believed attachment was based on innate systems. One good example of a mechanism ...
ML
16864 Views

what are the functions of neurones?

Motor neurone - carry info from the central nervous system to the effector cells Sensory neurones - carry info from sensory receptors to the CNS relay neurones - carry signals from one part of the CNS to ano...
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Answered by Tamara S. • Biology tutor
3236 Views